[PATCH 8/9] drivers/media/*: Convert from tasklet to BH workqueue

Allen Pais
2024-03-27T16:03:28Z

The only generic interface to execute asynchronously in the BH context is
tasklet; however, it's marked deprecated and has some design flaws. To
replace tasklets, BH workqueue support was recently added. A BH workqueue
behaves similarly to regular workqueues except that the queued work items
are executed in the BH context.

This patch converts drivers/media/* from tasklet to BH workqueue.

Based on the work done by Tejun Heo <tj@kernel.org>
Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10

Signed-off-by: Allen Pais <allen.lkml@gmail.com>
---
drivers/media/pci/bt8xx/bt878.c | 8 ++--
drivers/media/pci/bt8xx/bt878.h | 3 +-
drivers/media/pci/bt8xx/dvb-bt8xx.c | 9 ++--
drivers/media/pci/ddbridge/ddbridge.h | 3 +-
drivers/media/pci/mantis/hopper_cards.c | 2 +-
drivers/media/pci/mantis/mantis_cards.c | 2 +-
drivers/media/pci/mantis/mantis_common.h | 3 +-
drivers/media/pci/mantis/mantis_dma.c | 5 ++-
drivers/media/pci/mantis/mantis_dma.h | 2 +-
drivers/media/pci/mantis/mantis_dvb.c | 12 +++---
drivers/media/pci/ngene/ngene-core.c | 23 ++++++-----
drivers/media/pci/ngene/ngene.h | 5 ++-
drivers/media/pci/smipcie/smipcie-main.c | 18 ++++----
drivers/media/pci/smipcie/smipcie.h | 3 +-
drivers/media/pci/ttpci/budget-av.c | 3 +-
drivers/media/pci/ttpci/budget-ci.c | 27 ++++++------
drivers/media/pci/ttpci/budget-core.c | 10 ++---
drivers/media/pci/ttpci/budget.h | 5 ++-
drivers/media/pci/tw5864/tw5864-core.c | 2 +-
drivers/media/pci/tw5864/tw5864-video.c | 13 +++---
drivers/media/pci/tw5864/tw5864.h | 7 ++--
drivers/media/platform/intel/pxa_camera.c | 15 +++----
drivers/media/platform/marvell/mcam-core.c | 11 ++---
drivers/media/platform/marvell/mcam-core.h | 3 +-
.../st/sti/c8sectpfe/c8sectpfe-core.c | 15 +++----
.../st/sti/c8sectpfe/c8sectpfe-core.h | 2 +-
drivers/media/radio/wl128x/fmdrv.h | 7 ++--
drivers/media/radio/wl128x/fmdrv_common.c | 41 ++++++++++---------
drivers/media/rc/mceusb.c | 2 +-
drivers/media/usb/ttusb-dec/ttusb_dec.c | 21 +++++-----
30 files changed, 151 insertions(+), 131 deletions(-)

diff --git a/drivers/media/pci/bt8xx/bt878.c b/drivers/media/pci/bt8xx/bt878.c
index 90972d6952f1..983ec29108f0 100644
--- a/drivers/media/pci/bt8xx/bt878.c
+++ b/drivers/media/pci/bt8xx/bt878.c
@@ -300,8 +300,8 @@ static irqreturn_t bt878_irq(int irq, void *dev_id)
}
if (astat & BT878_ARISCI) {
bt->finished_block = (stat & BT878_ARISCS) >> 28;
- if (bt->tasklet.callback)
- tasklet_schedule(&bt->tasklet);
+ if (bt->work.func)
+ queue_work(system_bh_wq,
break;
}
count++;
@@ -478,8 +478,8 @@ static int bt878_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
btwrite(0, BT878_AINT_MASK);
bt878_num++;

- if (!bt->tasklet.func)
- tasklet_disable(&bt->tasklet);
+ if (!bt->work.func)
+ disable_work_sync(&bt->work);

return 0;

diff --git a/drivers/media/pci/bt8xx/bt878.h b/drivers/media/pci/bt8xx/bt878.h
index fde8db293c54..b9ce78e5116b 100644
--- a/drivers/media/pci/bt8xx/bt878.h
+++ b/drivers/media/pci/bt8xx/bt878.h
@@ -14,6 +14,7 @@
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
+#include <linux/workqueue.h>

#include "bt848.h"
#include "bttv.h"
@@ -120,7 +121,7 @@ struct bt878 {
dma_addr_t risc_dma;
u32 risc_pos;

- struct tasklet_struct tasklet;
+ struct work_struct work;
int shutdown;
};

diff --git a/drivers/media/pci/bt8xx/dvb-bt8xx.c b/drivers/media/pci/bt8xx/dvb-bt8xx.c
index 390cbba6c065..8c0e1fa764a4 100644
--- a/drivers/media/pci/bt8xx/dvb-bt8xx.c
+++ b/drivers/media/pci/bt8xx/dvb-bt8xx.c
@@ -15,6 +15,7 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/i2c.h>
+#include <linux/workqueue.h>

#include <media/dmxdev.h>
#include <media/dvbdev.h>
@@ -39,9 +40,9 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

#define IF_FREQUENCYx6 217 /* 6 * 36.16666666667MHz */

-static void dvb_bt8xx_task(struct tasklet_struct *t)
+static void dvb_bt8xx_task(struct work_struct *t)
{
- struct bt878 *bt = from_tasklet(bt, t, tasklet);
+ struct bt878 *bt = from_work(bt, t, work);
struct dvb_bt8xx_card *card = dev_get_drvdata(&bt->adapter->dev);

dprintk("%d\n", card->bt->finished_block);
@@ -782,7 +783,7 @@ static int dvb_bt8xx_load_card(struct dvb_bt8xx_card *card, u32 type)
goto err_disconnect_frontend;
}

- tasklet_setup(&card->bt->tasklet, dvb_bt8xx_task);
+ INIT_WORK(&card->bt->work, dvb_bt8xx_task);

frontend_init(card, type);

@@ -922,7 +923,7 @@ static void dvb_bt8xx_remove(struct bttv_sub_device *sub)
dprintk("dvb_bt8xx: unloading card%d\n", card->bttv_nr);

bt878_stop(card->bt);
- tasklet_kill(&card->bt->tasklet);
+ cancel_work_sync(&card->bt->work);
dvb_net_release(&card->dvbnet);
card->demux.dmx.remove_frontend(&card->demux.dmx, &card->fe_mem);
card->demux.dmx.remove_frontend(&card->demux.dmx, &card->fe_hw);
diff --git a/drivers/media/pci/ddbridge/ddbridge.h b/drivers/media/pci/ddbridge/ddbridge.h
index f3699dbd193f..037d1d13ef0f 100644
--- a/drivers/media/pci/ddbridge/ddbridge.h
+++ b/drivers/media/pci/ddbridge/ddbridge.h
@@ -35,6 +35,7 @@
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
+#include <linux/workqueue.h>

#include <asm/dma.h>
#include <asm/irq.h>
@@ -298,7 +299,7 @@ struct ddb_link {
spinlock_t lock; /* lock link access */
struct mutex flash_mutex; /* lock flash access */
struct ddb_lnb lnb;
- struct tasklet_struct tasklet;
+ struct work_struct work;
struct ddb_ids ids;

spinlock_t temp_lock; /* lock temp chip access */
diff --git a/drivers/media/pci/mantis/hopper_cards.c b/drivers/media/pci/mantis/hopper_cards.c
index c0bd5d7e148b..869ea88c4893 100644
--- a/drivers/media/pci/mantis/hopper_cards.c
+++ b/drivers/media/pci/mantis/hopper_cards.c
@@ -116,7 +116,7 @@ static irqreturn_t hopper_irq_handler(int irq, void *dev_id)
if (stat & MANTIS_INT_RISCI) {
dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
- tasklet_schedule(&mantis->tasklet);
+ queue_work(system_bh_wq, &mantis->work);
}
if (stat & MANTIS_INT_I2CDONE) {
dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
diff --git a/drivers/media/pci/mantis/mantis_cards.c b/drivers/media/pci/mantis/mantis_cards.c
index 906e4500d87d..cb124b19e36e 100644
--- a/drivers/media/pci/mantis/mantis_cards.c
+++ b/drivers/media/pci/mantis/mantis_cards.c
@@ -125,7 +125,7 @@ static irqreturn_t mantis_irq_handler(int irq, void *dev_id)
if (stat & MANTIS_INT_RISCI) {
dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
- tasklet_schedule(&mantis->tasklet);
+ queue_work(system_bh_wq, &mantis->work);
}
if (stat & MANTIS_INT_I2CDONE) {
dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
diff --git a/drivers/media/pci/mantis/mantis_common.h b/drivers/media/pci/mantis/mantis_common.h
index d88ac280226c..f2247148f268 100644
--- a/drivers/media/pci/mantis/mantis_common.h
+++ b/drivers/media/pci/mantis/mantis_common.h
@@ -12,6 +12,7 @@
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
+#include <linux/workqueue.h>

#include "mantis_reg.h"
#include "mantis_uart.h"
@@ -125,7 +126,7 @@ struct mantis_pci {
__le32 *risc_cpu;
dma_addr_t risc_dma;

- struct tasklet_struct tasklet;
+ struct work_struct work;
spinlock_t intmask_lock;

struct i2c_adapter adapter;
diff --git a/drivers/media/pci/mantis/mantis_dma.c b/drivers/media/pci/mantis/mantis_dma.c
index 80c843936493..c85f9b84a2c6 100644
--- a/drivers/media/pci/mantis/mantis_dma.c
+++ b/drivers/media/pci/mantis/mantis_dma.c
@@ -15,6 +15,7 @@
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
+#include <linux/workqueue.h>

#include <media/dmxdev.h>
#include <media/dvbdev.h>
@@ -200,9 +201,9 @@ void mantis_dma_stop(struct mantis_pci *mantis)
}

-void mantis_dma_xfer(struct tasklet_struct *t)
+void mantis_dma_xfer(struct work_struct *t)
{
- struct mantis_pci *mantis = from_tasklet(mantis, t, tasklet);
+ struct mantis_pci *mantis = from_work(mantis, t, work);
struct mantis_hwconfig *config = mantis->hwconfig;

while (mantis->last_block != mantis->busy_block) {
diff --git a/drivers/media/pci/mantis/mantis_dma.h b/drivers/media/pci/mantis/mantis_dma.h
index 37da982c9c29..5db0d3728f15 100644
--- a/drivers/media/pci/mantis/mantis_dma.h
+++ b/drivers/media/pci/mantis/mantis_dma.h
@@ -13,6 +13,6 @@ extern int mantis_dma_init(struct mantis_pci *mantis);
extern int mantis_dma_exit(struct mantis_pci *mantis);
extern void mantis_dma_start(struct mantis_pci *mantis);
extern void mantis_dma_stop(struct mantis_pci *mantis);
-extern void mantis_dma_xfer(struct tasklet_struct *t);
+extern void mantis_dma_xfer(struct work_struct *t);

#endif /* __MANTIS_DMA_H */
diff --git a/drivers/media/pci/mantis/mantis_dvb.c b/drivers/media/pci/mantis/mantis_dvb.c
index c7ba4a76e608..f640635de170 100644
--- a/drivers/media/pci/mantis/mantis_dvb.c
+++ b/drivers/media/pci/mantis/mantis_dvb.c
@@ -105,7 +105,7 @@ static int mantis_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
if (mantis->feeds == 1) {
dprintk(MANTIS_DEBUG, 1, "mantis start feed & dma");
mantis_dma_start(mantis);
- tasklet_enable(&mantis->tasklet);
+ enable_and_queue_work(system_bh_wq, &mantis->work);
}

return mantis->feeds;
@@ -125,7 +125,7 @@ static int mantis_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
mantis->feeds--;
if (mantis->feeds == 0) {
dprintk(MANTIS_DEBUG, 1, "mantis stop feed and dma");
- tasklet_disable(&mantis->tasklet);
+ disable_work_sync(&mantis->work);
mantis_dma_stop(mantis);
}

@@ -205,8 +205,8 @@ int mantis_dvb_init(struct mantis_pci *mantis)
}

dvb_net_init(&mantis->dvb_adapter, &mantis->dvbnet, &mantis->demux.dmx);
- tasklet_setup(&mantis->tasklet, mantis_dma_xfer);
- tasklet_disable(&mantis->tasklet);
+ INIT_WORK(&mantis->bh, mantis_dma_xfer);
+ disable_work_sync(&mantis->work);
if (mantis->hwconfig) {
result = config->frontend_init(mantis, mantis->fe);
if (result < 0) {
@@ -235,7 +235,7 @@ int mantis_dvb_init(struct mantis_pci *mantis)

/* Error conditions .. */
err5:
- tasklet_kill(&mantis->tasklet);
+ cancel_work_sync(&mantis->work);
dvb_net_release(&mantis->dvbnet);
if (mantis->fe) {
dvb_unregister_frontend(mantis->fe);
@@ -273,7 +273,7 @@ int mantis_dvb_exit(struct mantis_pci *mantis)
dvb_frontend_detach(mantis->fe);
}

- tasklet_kill(&mantis->tasklet);
+ cancel_work_sync(&mantis->work);
dvb_net_release(&mantis->dvbnet);

mantis->demux.dmx.remove_frontend(&mantis->demux.dmx, &mantis->fe_mem);
diff --git a/drivers/media/pci/ngene/ngene-core.c b/drivers/media/pci/ngene/ngene-core.c
index 7481f553f959..5211d6796748 100644
--- a/drivers/media/pci/ngene/ngene-core.c
+++ b/drivers/media/pci/ngene/ngene-core.c
@@ -21,6 +21,7 @@
#include <linux/byteorder/generic.h>
#include <linux/firmware.h>
#include <linux/vmalloc.h>
+#include <linux/workqueue.h>

#include "ngene.h"

@@ -50,9 +51,9 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
/* nGene interrupt handler **************************************************/
/****************************************************************************/

-static void event_tasklet(struct tasklet_struct *t)
+static void event_work(struct work_struct *t)
{
- struct ngene *dev = from_tasklet(dev, t, event_tasklet);
+ struct ngene *dev = from_work(dev, t, event_work);

while (dev->EventQueueReadIndex != dev->EventQueueWriteIndex) {
struct EVENT_BUFFER Event =
@@ -68,9 +69,9 @@ static void event_tasklet(struct tasklet_struct *t)
}
}

-static void demux_tasklet(struct tasklet_struct *t)
+static void demux_work(struct work_struct *t)
{
- struct ngene_channel *chan = from_tasklet(chan, t, demux_tasklet);
+ struct ngene_channel *chan = from_work(chan, t, demux_work);
struct device *pdev = &chan->dev->pci_dev->dev;
struct SBufferHeader *Cur = chan->nextBuffer;

@@ -204,7 +205,7 @@ static irqreturn_t irq_handler(int irq, void *dev_id)
dev->EventQueueOverflowFlag = 1;
}
dev->EventBuffer->EventStatus &= ~0x80;
- tasklet_schedule(&dev->event_tasklet);
+ queue_work(system_bh_wq, &dev->event_work);
rc = IRQ_HANDLED;
}

@@ -217,8 +218,8 @@ static irqreturn_t irq_handler(int irq, void *dev_id)
ngeneBuffer.SR.Flags & 0xC0) == 0x80) {
dev->channel[i].nextBuffer->
ngeneBuffer.SR.Flags |= 0x40;
- tasklet_schedule(
- &dev->channel[i].demux_tasklet);
+ queue_work(system_bh_wq,
+ &dev->channel[i].demux_work);
rc = IRQ_HANDLED;
}
}
@@ -1181,7 +1182,7 @@ static void ngene_init(struct ngene *dev)
struct device *pdev = &dev->pci_dev->dev;
int i;

- tasklet_setup(&dev->event_tasklet, event_tasklet);
+ INIT_WORK(&dev->event_work, event_work);

memset_io(dev->iomem + 0xc000, 0x00, 0x220);
memset_io(dev->iomem + 0xc400, 0x00, 0x100);
@@ -1395,7 +1396,7 @@ static void release_channel(struct ngene_channel *chan)
if (chan->running)
set_transfer(chan, 0);

- tasklet_kill(&chan->demux_tasklet);
+ cancel_work_sync(&chan->demux_work);

if (chan->ci_dev) {
dvb_unregister_device(chan->ci_dev);
@@ -1445,7 +1446,7 @@ static int init_channel(struct ngene_channel *chan)
struct ngene_info *ni = dev->card_info;
int io = ni->io_type[nr];

- tasklet_setup(&chan->demux_tasklet, demux_tasklet);
+ INIT_WORK(&chan->demux_work, demux_work);
chan->users = 0;
chan->type = io;
chan->mode = chan->type; /* for now only one mode */
@@ -1647,7 +1648,7 @@ void ngene_remove(struct pci_dev *pdev)
struct ngene *dev = pci_get_drvdata(pdev);
int i;

- tasklet_kill(&dev->event_tasklet);
+ cancel_work_sync(&dev->event_work);
for (i = MAX_STREAM - 1; i >= 0; i--)
release_channel(&dev->channel[i]);
if (dev->ci.en)
diff --git a/drivers/media/pci/ngene/ngene.h b/drivers/media/pci/ngene/ngene.h
index d1d7da84cd9d..c2a23f6dbe09 100644
--- a/drivers/media/pci/ngene/ngene.h
+++ b/drivers/media/pci/ngene/ngene.h
@@ -16,6 +16,7 @@
#include <linux/scatterlist.h>

#include <linux/dvb/frontend.h>
+#include <linux/workqueue.h>

#include <media/dmxdev.h>
#include <media/dvbdev.h>
@@ -621,7 +622,7 @@ struct ngene_channel {
int users;
struct video_device *v4l_dev;
struct dvb_device *ci_dev;
- struct tasklet_struct demux_tasklet;
+ struct work_struct demux_work;

struct SBufferHeader *nextBuffer;
enum KSSTATE State;
@@ -717,7 +718,7 @@ struct ngene {
struct EVENT_BUFFER EventQueue[EVENT_QUEUE_SIZE];
int EventQueueOverflowCount;
int EventQueueOverflowFlag;
- struct tasklet_struct event_tasklet;
+ struct work_struct event_work;
struct EVENT_BUFFER *EventBuffer;
int EventQueueWriteIndex;
int EventQueueReadIndex;
diff --git a/drivers/media/pci/smipcie/smipcie-main.c b/drivers/media/pci/smipcie/smipcie-main.c
index 0c300d019d9c..7da6bb55660b 100644
--- a/drivers/media/pci/smipcie/smipcie-main.c
+++ b/drivers/media/pci/smipcie/smipcie-main.c
@@ -279,10 +279,10 @@ static void smi_port_clearInterrupt(struct smi_port *port)
(port->_dmaInterruptCH0 | port->_dmaInterruptCH1));
}

-/* tasklet handler: DMA data to dmx.*/
-static void smi_dma_xfer(struct tasklet_struct *t)
+/* work handler: DMA data to dmx.*/
+static void smi_dma_xfer(struct work_struct *t)
{
- struct smi_port *port = from_tasklet(port, t, tasklet);
+ struct smi_port *port = from_work(port, t, work);
struct smi_dev *dev = port->dev;
u32 intr_status, finishedData, dmaManagement;
u8 dmaChan0State, dmaChan1State;
@@ -426,8 +426,8 @@ static int smi_port_init(struct smi_port *port, int dmaChanUsed)
}

smi_port_disableInterrupt(port);
- tasklet_setup(&port->tasklet, smi_dma_xfer);
- tasklet_disable(&port->tasklet);
+ INIT_WORK(&port->work, smi_dma_xfer);
+ disable_work_sync(&port->work);
port->enable = 1;
return 0;
err:
@@ -438,7 +438,7 @@ static int smi_port_init(struct smi_port *port, int dmaChanUsed)
static void smi_port_exit(struct smi_port *port)
{
smi_port_disableInterrupt(port);
- tasklet_kill(&port->tasklet);
+ cancel_work_sync(&port->work);
smi_port_dma_free(port);
port->enable = 0;
}
@@ -452,7 +452,7 @@ static int smi_port_irq(struct smi_port *port, u32 int_status)
smi_port_disableInterrupt(port);
port->_int_status = int_status;
smi_port_clearInterrupt(port);
- tasklet_schedule(&port->tasklet);
+ queue_work(system_bh_wq, &port->work);
handled = 1;
}
return handled;
@@ -823,7 +823,7 @@ static int smi_start_feed(struct dvb_demux_feed *dvbdmxfeed)
smi_port_clearInterrupt(port);
smi_port_enableInterrupt(port);
smi_write(port->DMA_MANAGEMENT, dmaManagement);
- tasklet_enable(&port->tasklet);
+ enable_and_queue_work(system_bh_wq, &port->work);
}
return port->users;
}
@@ -837,7 +837,7 @@ static int smi_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
if (--port->users)
return port->users;

- tasklet_disable(&port->tasklet);
+ disable_work_sync(&port->work);
smi_port_disableInterrupt(port);
smi_clear(port->DMA_MANAGEMENT, 0x30003);
return 0;
diff --git a/drivers/media/pci/smipcie/smipcie.h b/drivers/media/pci/smipcie/smipcie.h
index 2b5e0154814c..f124d2cdead6 100644
--- a/drivers/media/pci/smipcie/smipcie.h
+++ b/drivers/media/pci/smipcie/smipcie.h
@@ -17,6 +17,7 @@
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
+#include <linux/workqueue.h>
#include <media/rc-core.h>

#include <media/demux.h>
@@ -257,7 +258,7 @@ struct smi_port {
u32 _dmaInterruptCH0;
u32 _dmaInterruptCH1;
u32 _int_status;
- struct tasklet_struct tasklet;
+ struct work_struct work;
/* dvb */
struct dmx_frontend hw_frontend;
struct dmx_frontend mem_frontend;
diff --git a/drivers/media/pci/ttpci/budget-av.c b/drivers/media/pci/ttpci/budget-av.c
index a47c5850ef87..6e43b1a01191 100644
--- a/drivers/media/pci/ttpci/budget-av.c
+++ b/drivers/media/pci/ttpci/budget-av.c
@@ -37,6 +37,7 @@
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/spinlock.h>
+#include <linux/workqueue.h>

#include <media/dvb_ca_en50221.h>

@@ -55,7 +56,7 @@ struct budget_av {
struct video_device vd;
int cur_input;
int has_saa7113;
- struct tasklet_struct ciintf_irq_tasklet;
+ struct work_struct ciintf_irq_work;
int slot_status;
struct dvb_ca_en50221 ca;
u8 reinitialise_demod:1;
diff --git a/drivers/media/pci/ttpci/budget-ci.c b/drivers/media/pci/ttpci/budget-ci.c
index 66e1a004ee43..11e0ed62707e 100644
--- a/drivers/media/pci/ttpci/budget-ci.c
+++ b/drivers/media/pci/ttpci/budget-ci.c
@@ -17,6 +17,7 @@
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
+#include <linux/workqueue.h>
#include <media/rc-core.h>

#include "budget.h"
@@ -80,7 +81,7 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

struct budget_ci_ir {
struct rc_dev *dev;
- struct tasklet_struct msp430_irq_tasklet;
+ struct work_struct msp430_irq_work;
char name[72]; /* 40 + 32 for (struct saa7146_dev).name */
char phys[32];
int rc5_device;
@@ -91,7 +92,7 @@ struct budget_ci_ir {

struct budget_ci {
struct budget budget;
- struct tasklet_struct ciintf_irq_tasklet;
+ struct work_struct ciintf_irq_work;
int slot_status;
int ci_irq;
struct dvb_ca_en50221 ca;
@@ -99,9 +100,9 @@ struct budget_ci {
u8 tuner_pll_address; /* used for philips_tdm1316l configs */
};

-static void msp430_ir_interrupt(struct tasklet_struct *t)
+static void msp430_ir_interrupt(struct work_struct *t)
{
- struct budget_ci_ir *ir = from_tasklet(ir, t, msp430_irq_tasklet);
+ struct budget_ci_ir *ir = from_work(ir, t, msp430_irq_work);
struct budget_ci *budget_ci = container_of(ir, typeof(*budget_ci), ir);
struct rc_dev *dev = budget_ci->ir.dev;
u32 command = ttpci_budget_debiread(&budget_ci->budget, DEBINOSWAP, DEBIADDR_IR, 2, 1, 0) >> 8;
@@ -230,7 +231,7 @@ static int msp430_ir_init(struct budget_ci *budget_ci)

budget_ci->ir.dev = dev;

- tasklet_setup(&budget_ci->ir.msp430_irq_tasklet, msp430_ir_interrupt);
+ INIT_WORK(&budget_ci->ir.msp430_irq_work, msp430_ir_interrupt);

SAA7146_IER_ENABLE(saa, MASK_06);
saa7146_setgpio(saa, 3, SAA7146_GPIO_IRQHI);
@@ -244,7 +245,7 @@ static void msp430_ir_deinit(struct budget_ci *budget_ci)

SAA7146_IER_DISABLE(saa, MASK_06);
saa7146_setgpio(saa, 3, SAA7146_GPIO_INPUT);
- tasklet_kill(&budget_ci->ir.msp430_irq_tasklet);
+ cancel_work_sync(&budget_ci->ir.msp430_irq_work);

rc_unregister_device(budget_ci->ir.dev);
}
@@ -348,10 +349,10 @@ static int ciintf_slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
return 0;
}

-static void ciintf_interrupt(struct tasklet_struct *t)
+static void ciintf_interrupt(struct work_struct *t)
{
- struct budget_ci *budget_ci = from_tasklet(budget_ci, t,
- ciintf_irq_tasklet);
+ struct budget_ci *budget_ci = from_work(budget_ci, t,
+ ciintf_irq_work);
struct saa7146_dev *saa = budget_ci->budget.dev;
unsigned int flags;

@@ -492,7 +493,7 @@ static int ciintf_init(struct budget_ci *budget_ci)

// Setup CI slot IRQ
if (budget_ci->ci_irq) {
- tasklet_setup(&budget_ci->ciintf_irq_tasklet, ciintf_interrupt);
+ INIT_WORK(&budget_ci->ciintf_irq_work, ciintf_interrupt);
if (budget_ci->slot_status != SLOTSTATUS_NONE) {
saa7146_setgpio(saa, 0, SAA7146_GPIO_IRQLO);
} else {
@@ -532,7 +533,7 @@ static void ciintf_deinit(struct budget_ci *budget_ci)
if (budget_ci->ci_irq) {
SAA7146_IER_DISABLE(saa, MASK_03);
saa7146_setgpio(saa, 0, SAA7146_GPIO_INPUT);
- tasklet_kill(&budget_ci->ciintf_irq_tasklet);
+ cancel_work_sync(&budget_ci->ciintf_irq_work);
}

// reset interface
@@ -558,13 +559,13 @@ static void budget_ci_irq(struct saa7146_dev *dev, u32 * isr)
dprintk(8, "dev: %p, budget_ci: %p\n", dev, budget_ci);

if (*isr & MASK_06)
- tasklet_schedule(&budget_ci->ir.msp430_irq_tasklet);
+ queue_work(system_bh_wq, &budget_ci->ir.msp430_irq_work);

if (*isr & MASK_10)
ttpci_budget_irq10_handler(dev, isr);

if ((*isr & MASK_03) && (budget_ci->budget.ci_present) && (budget_ci->ci_irq))
- tasklet_schedule(&budget_ci->ciintf_irq_tasklet);
+ queue_work(system_bh_wq, &budget_ci->ciintf_irq_work);
}

static u8 philips_su1278_tt_inittab[] = {
diff --git a/drivers/media/pci/ttpci/budget-core.c b/drivers/media/pci/ttpci/budget-core.c
index 25f44c3eebf3..3443c12dc9f2 100644
--- a/drivers/media/pci/ttpci/budget-core.c
+++ b/drivers/media/pci/ttpci/budget-core.c
@@ -171,9 +171,9 @@ static int budget_read_fe_status(struct dvb_frontend *fe,
return ret;
}

-static void vpeirq(struct tasklet_struct *t)
+static void vpeirq(struct work_struct *t)
{
- struct budget *budget = from_tasklet(budget, t, vpe_tasklet);
+ struct budget *budget = from_work(budget, t, vpe_work);
u8 *mem = (u8 *) (budget->grabbing);
u32 olddma = budget->ttbp;
u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
@@ -520,7 +520,7 @@ int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
/* upload all */
saa7146_write(dev, GPIO_CTRL, 0x000000);

- tasklet_setup(&budget->vpe_tasklet, vpeirq);
+ INIT_WORK(&budget->vpe_work, vpeirq);

/* frontend power on */
if (bi->type != BUDGET_FS_ACTIVY)
@@ -557,7 +557,7 @@ int ttpci_budget_deinit(struct budget *budget)

budget_unregister(budget);

- tasklet_kill(&budget->vpe_tasklet);
+ cancel_work_sync(&budget->vpe_work);

saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);

@@ -575,7 +575,7 @@ void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
dprintk(8, "dev: %p, budget: %p\n", dev, budget);

if (*isr & MASK_10)
- tasklet_schedule(&budget->vpe_tasklet);
+ queue_work(system_bh_wq, &budget->vpe_work);
}

void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
diff --git a/drivers/media/pci/ttpci/budget.h b/drivers/media/pci/ttpci/budget.h
index bd87432e6cde..a3ee75e326b4 100644
--- a/drivers/media/pci/ttpci/budget.h
+++ b/drivers/media/pci/ttpci/budget.h
@@ -12,6 +12,7 @@

#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/workqueue.h>

#include <media/drv-intf/saa7146.h>

@@ -49,8 +50,8 @@ struct budget {
unsigned char *grabbing;
struct saa7146_pgtable pt;

- struct tasklet_struct fidb_tasklet;
- struct tasklet_struct vpe_tasklet;
+ struct work_struct fidb_work;
+ struct work_struct vpe_work;

struct dmxdev dmxdev;
struct dvb_demux demux;
diff --git a/drivers/media/pci/tw5864/tw5864-core.c b/drivers/media/pci/tw5864/tw5864-core.c
index 560ff1ddcc83..a58c268e94a8 100644
--- a/drivers/media/pci/tw5864/tw5864-core.c
+++ b/drivers/media/pci/tw5864/tw5864-core.c
@@ -144,7 +144,7 @@ static void tw5864_h264_isr(struct tw5864_dev *dev)
cur_frame->gop_seqno = input->frame_gop_seqno;

dev->h264_buf_w_index = next_frame_index;
- tasklet_schedule(&dev->tasklet);
+ queue_work(system_bh_wq, &dev->work);

cur_frame = next_frame;

diff --git a/drivers/media/pci/tw5864/tw5864-video.c b/drivers/media/pci/tw5864/tw5864-video.c
index 8b1aae4b6319..ac2249626506 100644
--- a/drivers/media/pci/tw5864/tw5864-video.c
+++ b/drivers/media/pci/tw5864/tw5864-video.c
@@ -6,6 +6,7 @@
*/

#include <linux/module.h>
+#include <linux/workqueue.h>
#include <media/v4l2-common.h>
#include <media/v4l2-event.h>
#include <media/videobuf2-dma-contig.h>
@@ -175,7 +176,7 @@ static const unsigned int intra4x4_lambda3[] = {
static v4l2_std_id tw5864_get_v4l2_std(enum tw5864_vid_std std);
static enum tw5864_vid_std tw5864_from_v4l2_std(v4l2_std_id v4l2_std);

-static void tw5864_handle_frame_task(struct tasklet_struct *t);
+static void tw5864_handle_frame_task(struct work_struct *t);
static void tw5864_handle_frame(struct tw5864_h264_frame *frame);
static void tw5864_frame_interval_set(struct tw5864_input *input);

@@ -1062,7 +1063,7 @@ int tw5864_video_init(struct tw5864_dev *dev, int *video_nr)
dev->irqmask |= TW5864_INTR_VLC_DONE | TW5864_INTR_TIMER;
tw5864_irqmask_apply(dev);

- tasklet_setup(&dev->tasklet, tw5864_handle_frame_task);
+ INIT_WORK(&dev->work, tw5864_handle_frame_task);

for (i = 0; i < TW5864_INPUTS; i++) {
dev->inputs[i].root = dev;
@@ -1079,7 +1080,7 @@ int tw5864_video_init(struct tw5864_dev *dev, int *video_nr)
for (i = last_input_nr_registered; i >= 0; i--)
tw5864_video_input_fini(&dev->inputs[i]);

- tasklet_kill(&dev->tasklet);
+ cancel_work_sync(&dev->work);

free_dma:
for (i = last_dma_allocated; i >= 0; i--) {
@@ -1198,7 +1199,7 @@ void tw5864_video_fini(struct tw5864_dev *dev)
{
int i;

- tasklet_kill(&dev->tasklet);
+ cancel_work_sync(&dev->work);

for (i = 0; i < TW5864_INPUTS; i++)
tw5864_video_input_fini(&dev->inputs[i]);
@@ -1315,9 +1316,9 @@ static int tw5864_is_motion_triggered(struct tw5864_h264_frame *frame)
return detected;
}

-static void tw5864_handle_frame_task(struct tasklet_struct *t)
+static void tw5864_handle_frame_task(struct work_struct *t)
{
- struct tw5864_dev *dev = from_tasklet(dev, t, tasklet);
+ struct tw5864_dev *dev = from_work(dev, t, work);
unsigned long flags;
int batch_size = H264_BUF_CNT;

diff --git a/drivers/media/pci/tw5864/tw5864.h b/drivers/media/pci/tw5864/tw5864.h
index a8b6fbd5b710..278373859098 100644
--- a/drivers/media/pci/tw5864/tw5864.h
+++ b/drivers/media/pci/tw5864/tw5864.h
@@ -12,6 +12,7 @@
#include <linux/mutex.h>
#include <linux/io.h>
#include <linux/interrupt.h>
+#include <linux/workqueue.h>

#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
@@ -85,7 +86,7 @@ struct tw5864_input {
int nr; /* input number */
struct tw5864_dev *root;
struct mutex lock; /* used for vidq and vdev */
- spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */
+ spinlock_t slock; /* used for sync between ISR, work & V4L2 API */
struct video_device vdev;
struct v4l2_ctrl_handler hdl;
struct vb2_queue vidq;
@@ -142,7 +143,7 @@ struct tw5864_h264_frame {

/* global device status */
struct tw5864_dev {
- spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */
+ spinlock_t slock; /* used for sync between ISR, work & V4L2 API */
struct v4l2_device v4l2_dev;
struct tw5864_input inputs[TW5864_INPUTS];
#define H264_BUF_CNT 4
@@ -150,7 +151,7 @@ struct tw5864_dev {
int h264_buf_r_index;
int h264_buf_w_index;

- struct tasklet_struct tasklet;
+ struct work_struct work;

int encoder_busy;
/* Input number to check next for ready raw picture (in RR fashion) */
diff --git a/drivers/media/platform/intel/pxa_camera.c b/drivers/media/platform/intel/pxa_camera.c
index d904952bf00e..df0a3c559287 100644
--- a/drivers/media/platform/intel/pxa_camera.c
+++ b/drivers/media/platform/intel/pxa_camera.c
@@ -43,6 +43,7 @@
#include <linux/videodev2.h>

#include <linux/platform_data/media/camera-pxa.h>
+#include <linux/workqueue.h>

#define PXA_CAM_VERSION "0.0.6"
#define PXA_CAM_DRV_NAME "pxa27x-camera"
@@ -683,7 +684,7 @@ struct pxa_camera_dev {
unsigned int buf_sequence;

struct pxa_buffer *active;
- struct tasklet_struct task_eof;
+ struct work_struct task_eof;

u32 save_cicr[5];
};
@@ -1146,9 +1147,9 @@ static void pxa_camera_deactivate(struct pxa_camera_dev *pcdev)
clk_disable_unprepare(pcdev->clk);
}

-static void pxa_camera_eof(struct tasklet_struct *t)
+static void pxa_camera_eof(struct work_struct *t)
{
- struct pxa_camera_dev *pcdev = from_tasklet(pcdev, t, task_eof);
+ struct pxa_camera_dev *pcdev = from_work(pcdev, t, task_eof);
unsigned long cifr;
struct pxa_buffer *buf;

@@ -1185,7 +1186,7 @@ static irqreturn_t pxa_camera_irq(int irq, void *data)
if (status & CISR_EOF) {
cicr0 = __raw_readl(pcdev->base + CICR0) | CICR0_EOFM;
__raw_writel(cicr0, pcdev->base + CICR0);
- tasklet_schedule(&pcdev->task_eof);
+ queue_work(system_bh_wq, &pcdev->task_eof);
}

return IRQ_HANDLED;
@@ -2383,7 +2384,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
}
}

- tasklet_setup(&pcdev->task_eof, pxa_camera_eof);
+ INIT_WORK(&pcdev->task_eof, pxa_camera_eof);

pxa_camera_activate(pcdev);

@@ -2409,7 +2410,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
return 0;
exit_deactivate:
pxa_camera_deactivate(pcdev);
- tasklet_kill(&pcdev->task_eof);
+ cancel_work_sync(&pcdev->task_eof);
exit_free_dma:
dma_release_channel(pcdev->dma_chans[2]);
exit_free_dma_u:
@@ -2428,7 +2429,7 @@ static void pxa_camera_remove(struct platform_device *pdev)
struct pxa_camera_dev *pcdev = platform_get_drvdata(pdev);

pxa_camera_deactivate(pcdev);
- tasklet_kill(&pcdev->task_eof);
+ cancel_work_sync(&pcdev->task_eof);
dma_release_channel(pcdev->dma_chans[0]);
dma_release_channel(pcdev->dma_chans[1]);
dma_release_channel(pcdev->dma_chans[2]);
diff --git a/drivers/media/platform/marvell/mcam-core.c b/drivers/media/platform/marvell/mcam-core.c
index 66688b4aece5..d6b96a7039be 100644
--- a/drivers/media/platform/marvell/mcam-core.c
+++ b/drivers/media/platform/marvell/mcam-core.c
@@ -25,6 +25,7 @@
#include <linux/clk-provider.h>
#include <linux/videodev2.h>
#include <linux/pm_runtime.h>
+#include <linux/workqueue.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
@@ -439,9 +440,9 @@ static void mcam_ctlr_dma_vmalloc(struct mcam_camera *cam)
/*
* Copy data out to user space in the vmalloc case
*/
-static void mcam_frame_tasklet(struct tasklet_struct *t)
+static void mcam_frame_work(struct work_struct *t)
{
- struct mcam_camera *cam = from_tasklet(cam, t, s_tasklet);
+ struct mcam_camera *cam = from_work(cam, t, s_work);
int i;
unsigned long flags;
struct mcam_vb_buffer *buf;
@@ -480,7 +481,7 @@ static void mcam_frame_tasklet(struct tasklet_struct *t)

/*
- * Make sure our allocated buffers are up to the task.
+ * Make sure our allocated buffers are up to the work.
*/
static int mcam_check_dma_buffers(struct mcam_camera *cam)
{
@@ -493,7 +494,7 @@ static int mcam_check_dma_buffers(struct mcam_camera *cam)

static void mcam_vmalloc_done(struct mcam_camera *cam, int frame)
{
- tasklet_schedule(&cam->s_tasklet);
+ queue_work(system_bh_wq, &cam->s_work);
}

#else /* MCAM_MODE_VMALLOC */
@@ -1305,7 +1306,7 @@ static int mcam_setup_vb2(struct mcam_camera *cam)
break;
case B_vmalloc:
#ifdef MCAM_MODE_VMALLOC
- tasklet_setup(&cam->s_tasklet, mcam_frame_tasklet);
+ INIT_WORK(&cam->s_work, mcam_frame_work);
vq->ops = &mcam_vb2_ops;
vq->mem_ops = &vb2_vmalloc_memops;
cam->dma_setup = mcam_ctlr_dma_vmalloc;
diff --git a/drivers/media/platform/marvell/mcam-core.h b/drivers/media/platform/marvell/mcam-core.h
index 51e66db45af6..0d4b953dbb23 100644
--- a/drivers/media/platform/marvell/mcam-core.h
+++ b/drivers/media/platform/marvell/mcam-core.h
@@ -9,6 +9,7 @@

#include <linux/list.h>
#include <linux/clk-provider.h>
+#include <linux/workqueue.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-dev.h>
@@ -167,7 +168,7 @@ struct mcam_camera {
unsigned int dma_buf_size; /* allocated size */
void *dma_bufs[MAX_DMA_BUFS]; /* Internal buffer addresses */
dma_addr_t dma_handles[MAX_DMA_BUFS]; /* Buffer bus addresses */
- struct tasklet_struct s_tasklet;
+ struct work_struct s_work;
#endif
unsigned int sequence; /* Frame sequence number */
unsigned int buf_seq[MAX_DMA_BUFS]; /* Sequence for individual bufs */
diff --git a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c
index e4cf27b5a072..22b359569a10 100644
--- a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c
+++ b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c
@@ -33,6 +33,7 @@
#include <linux/time.h>
#include <linux/usb.h>
#include <linux/wait.h>
+#include <linux/workqueue.h>

#include "c8sectpfe-common.h"
#include "c8sectpfe-core.h"
@@ -73,16 +74,16 @@ static void c8sectpfe_timer_interrupt(struct timer_list *t)

/* is this descriptor initialised and TP enabled */
if (channel->irec && readl(channel->irec + DMA_PRDS_TPENABLE))
- tasklet_schedule(&channel->tsklet);
+ queue_work(system_bh_wq, &channel->tsklet);
}

fei->timer.expires = jiffies + msecs_to_jiffies(POLL_MSECS);
add_timer(&fei->timer);
}

-static void channel_swdemux_tsklet(struct tasklet_struct *t)
+static void channel_swdemux_tsklet(struct work_struct *t)
{
- struct channel_info *channel = from_tasklet(channel, t, tsklet);
+ struct channel_info *channel = from_work(channel, t, tsklet);
struct c8sectpfei *fei;
unsigned long wp, rp;
int pos, num_packets, n, size;
@@ -211,7 +212,7 @@ static int c8sectpfe_start_feed(struct dvb_demux_feed *dvbdmxfeed)

dev_dbg(fei->dev, "Starting channel=%p\n", channel);

- tasklet_setup(&channel->tsklet, channel_swdemux_tsklet);
+ INIT_WORK(&channel->tsklet, channel_swdemux_tsklet);

/* Reset the internal inputblock sram pointers */
writel(channel->fifo,
@@ -304,7 +305,7 @@ static int c8sectpfe_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
/* disable this channels descriptor */
writel(0, channel->irec + DMA_PRDS_TPENABLE);

- tasklet_disable(&channel->tsklet);
+ disable_work_sync(&channel->tsklet);

/* now request memdma channel goes idle */
idlereq = (1 << channel->tsin_id) | IDLEREQ;
@@ -631,8 +632,8 @@ static int configure_memdma_and_inputblock(struct c8sectpfei *fei,
writel(tsin->back_buffer_busaddr, tsin->irec + DMA_PRDS_BUSWP_TP(0));
writel(tsin->back_buffer_busaddr, tsin->irec + DMA_PRDS_BUSRP_TP(0));

- /* initialize tasklet */
- tasklet_setup(&tsin->tsklet, channel_swdemux_tsklet);
+ /* initialize work */
+ INIT_WORK(&tsin->tsklet, channel_swdemux_tsklet);

return 0;

diff --git a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h
index bf377cc82225..d63f0ee83615 100644
--- a/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h
+++ b/drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.h
@@ -51,7 +51,7 @@ struct channel_info {
unsigned long fifo;

struct completion idle_completion;
- struct tasklet_struct tsklet;
+ struct work_struct tsklet;

struct c8sectpfei *fei;
void __iomem *irec;
diff --git a/drivers/media/radio/wl128x/fmdrv.h b/drivers/media/radio/wl128x/fmdrv.h
index da8920169df8..85282f638c4a 100644
--- a/drivers/media/radio/wl128x/fmdrv.h
+++ b/drivers/media/radio/wl128x/fmdrv.h
@@ -15,6 +15,7 @@
#include <sound/core.h>
#include <sound/initval.h>
#include <linux/timer.h>
+#include <linux/workqueue.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
@@ -200,15 +201,15 @@ struct fmdev {
int streg_cbdata; /* status of ST registration */

struct sk_buff_head rx_q; /* RX queue */
- struct tasklet_struct rx_task; /* RX Tasklet */
+ struct work_struct rx_task; /* RX Work */

struct sk_buff_head tx_q; /* TX queue */
- struct tasklet_struct tx_task; /* TX Tasklet */
+ struct work_struct tx_task; /* TX Work */
unsigned long last_tx_jiffies; /* Timestamp of last pkt sent */
atomic_t tx_cnt; /* Number of packets can send at a time */

struct sk_buff *resp_skb; /* Response from the chip */
- /* Main task completion handler */
+ /* Main work completion handler */
struct completion maintask_comp;
/* Opcode of last command sent to the chip */
u8 pre_op;
diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c
index 3da8e5102bec..52290bb4a4ad 100644
--- a/drivers/media/radio/wl128x/fmdrv_common.c
+++ b/drivers/media/radio/wl128x/fmdrv_common.c
@@ -9,7 +9,7 @@
* one Channel-8 command to be sent to the chip).
* 2) Sending each Channel-8 command to the chip and reading
* response back over Shared Transport.
- * 3) Managing TX and RX Queues and Tasklets.
+ * 3) Managing TX and RX Queues and Works.
* 4) Handling FM Interrupt packet and taking appropriate action.
* 5) Loading FM firmware to the chip (common, FM TX, and FM RX
* firmware files based on mode selection)
@@ -29,6 +29,7 @@
#include "fmdrv_v4l2.h"
#include "fmdrv_common.h"
#include <linux/ti_wilink_st.h>
+#include <linux/workqueue.h>
#include "fmdrv_rx.h"
#include "fmdrv_tx.h"

@@ -244,10 +245,10 @@ void fmc_update_region_info(struct fmdev *fmdev, u8 region_to_set)
}

/*
- * FM common sub-module will schedule this tasklet whenever it receives
+ * FM common sub-module will schedule this work whenever it receives
* FM packet from ST driver.
*/
-static void recv_tasklet(struct tasklet_struct *t)
+static void recv_work(struct work_struct *t)
{
struct fmdev *fmdev;
struct fm_irq *irq_info;
@@ -256,7 +257,7 @@ static void recv_tasklet(struct tasklet_struct *t)
u8 num_fm_hci_cmds;
unsigned long flags;

- fmdev = from_tasklet(fmdev, t, tx_task);
+ fmdev = from_work(fmdev, t, tx_task);
irq_info = &fmdev->irq_info;
/* Process all packets in the RX queue */
while ((skb = skb_dequeue(&fmdev->rx_q))) {
@@ -322,22 +323,22 @@ static void recv_tasklet(struct tasklet_struct *t)

/*
* Check flow control field. If Num_FM_HCI_Commands field is
- * not zero, schedule FM TX tasklet.
+ * not zero, schedule FM TX work.
*/
if (num_fm_hci_cmds && atomic_read(&fmdev->tx_cnt))
if (!skb_queue_empty(&fmdev->tx_q))
- tasklet_schedule(&fmdev->tx_task);
+ queue_work(system_bh_wq, &fmdev->tx_task);
}
}

-/* FM send tasklet: is scheduled when FM packet has to be sent to chip */
-static void send_tasklet(struct tasklet_struct *t)
+/* FM send work: is scheduled when FM packet has to be sent to chip */
+static void send_work(struct work_struct *t)
{
struct fmdev *fmdev;
struct sk_buff *skb;
int len;

- fmdev = from_tasklet(fmdev, t, tx_task);
+ fmdev = from_work(fmdev, t, tx_task);

if (!atomic_read(&fmdev->tx_cnt))
return;
@@ -366,7 +367,7 @@ static void send_tasklet(struct tasklet_struct *t)
if (len < 0) {
kfree_skb(skb);
fmdev->resp_comp = NULL;
- fmerr("TX tasklet failed to send skb(%p)\n", skb);
+ fmerr("TX work failed to send skb(%p)\n", skb);
atomic_set(&fmdev->tx_cnt, 1);
} else {
fmdev->last_tx_jiffies = jiffies;
@@ -374,7 +375,7 @@ static void send_tasklet(struct tasklet_struct *t)
}

/*
- * Queues FM Channel-8 packet to FM TX queue and schedules FM TX tasklet for
+ * Queues FM Channel-8 packet to FM TX queue and schedules FM TX work for
* transmission
*/
static int fm_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload,
@@ -440,7 +441,7 @@ static int fm_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload,

fm_cb(skb)->completion = wait_completion;
skb_queue_tail(&fmdev->tx_q, skb);
- tasklet_schedule(&fmdev->tx_task);
+ queue_work(system_bh_wq, &fmdev->tx_task);

return 0;
}
@@ -462,7 +463,7 @@ int fmc_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload,

if (!wait_for_completion_timeout(&fmdev->maintask_comp,
FM_DRV_TX_TIMEOUT)) {
- fmerr("Timeout(%d sec),didn't get regcompletion signal from RX tasklet\n",
+ fmerr("Timeout(%d sec),didn't get regcompletion signal from RX work\n",
jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
return -ETIMEDOUT;
}
@@ -1455,7 +1456,7 @@ static long fm_st_receive(void *arg, struct sk_buff *skb)

memcpy(skb_push(skb, 1), &skb->cb[0], 1);
skb_queue_tail(&fmdev->rx_q, skb);
- tasklet_schedule(&fmdev->rx_task);
+ queue_work(system_bh_wq, &fmdev->rx_task);

return 0;
}
@@ -1537,13 +1538,13 @@ int fmc_prepare(struct fmdev *fmdev)
spin_lock_init(&fmdev->rds_buff_lock);
spin_lock_init(&fmdev->resp_skb_lock);

- /* Initialize TX queue and TX tasklet */
+ /* Initialize TX queue and TX work */
skb_queue_head_init(&fmdev->tx_q);
- tasklet_setup(&fmdev->tx_task, send_tasklet);
+ INIT_WORK(&fmdev->tx_task, send_work);

- /* Initialize RX Queue and RX tasklet */
+ /* Initialize RX Queue and RX work */
skb_queue_head_init(&fmdev->rx_q);
- tasklet_setup(&fmdev->rx_task, recv_tasklet);
+ INIT_WORK(&fmdev->rx_task, recv_work);

fmdev->irq_info.stage = 0;
atomic_set(&fmdev->tx_cnt, 1);
@@ -1589,8 +1590,8 @@ int fmc_release(struct fmdev *fmdev)
/* Service pending read */
wake_up_interruptible(&fmdev->rx.rds.read_queue);

- tasklet_kill(&fmdev->tx_task);
- tasklet_kill(&fmdev->rx_task);
+ cancel_work_sync(&fmdev->tx_task);
+ cancel_work_sync(&fmdev->rx_task);

skb_queue_purge(&fmdev->tx_q);
skb_queue_purge(&fmdev->rx_q);
diff --git a/drivers/media/rc/mceusb.c b/drivers/media/rc/mceusb.c
index c76ba24c1f55..a2e2e58b7506 100644
--- a/drivers/media/rc/mceusb.c
+++ b/drivers/media/rc/mceusb.c
@@ -774,7 +774,7 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir, u8 *buf, int buf_len,

/*
* Schedule work that can't be done in interrupt handlers
- * (mceusb_dev_recv() and mce_write_callback()) nor tasklets.
+ * (mceusb_dev_recv() and mce_write_callback()) nor works.
* Invokes mceusb_deferred_kevent() for recovering from
* error events specified by the kevent bit field.
*/
diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c
index 79faa2560613..55eeb00f1126 100644
--- a/drivers/media/usb/ttusb-dec/ttusb_dec.c
+++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c
@@ -19,6 +19,7 @@
#include <linux/input.h>

#include <linux/mutex.h>
+#include <linux/workqueue.h>

#include <media/dmxdev.h>
#include <media/dvb_demux.h>
@@ -139,7 +140,7 @@ struct ttusb_dec {
int v_pes_postbytes;

struct list_head urb_frame_list;
- struct tasklet_struct urb_tasklet;
+ struct work_struct urb_work;
spinlock_t urb_frame_list_lock;

struct dvb_demux_filter *audio_filter;
@@ -766,9 +767,9 @@ static void ttusb_dec_process_urb_frame(struct ttusb_dec *dec, u8 *b,
}
}

-static void ttusb_dec_process_urb_frame_list(struct tasklet_struct *t)
+static void ttusb_dec_process_urb_frame_list(struct work_struct *t)
{
- struct ttusb_dec *dec = from_tasklet(dec, t, urb_tasklet);
+ struct ttusb_dec *dec = from_work(dec, t, urb_work);
struct list_head *item;
struct urb_frame *frame;
unsigned long flags;
@@ -822,7 +823,7 @@ static void ttusb_dec_process_urb(struct urb *urb)
spin_unlock_irqrestore(&dec->urb_frame_list_lock,
flags);

- tasklet_schedule(&dec->urb_tasklet);
+ queue_work(system_bh_wq, &dec->urb_work);
}
}
} else {
@@ -1198,11 +1199,11 @@ static int ttusb_dec_alloc_iso_urbs(struct ttusb_dec *dec)
return 0;
}

-static void ttusb_dec_init_tasklet(struct ttusb_dec *dec)
+static void ttusb_dec_init_work(struct ttusb_dec *dec)
{
spin_lock_init(&dec->urb_frame_list_lock);
INIT_LIST_HEAD(&dec->urb_frame_list);
- tasklet_setup(&dec->urb_tasklet, ttusb_dec_process_urb_frame_list);
+ INIT_WORK(&dec->urb_work, ttusb_dec_process_urb_frame_list);
}

static int ttusb_init_rc( struct ttusb_dec *dec)
@@ -1588,12 +1589,12 @@ static void ttusb_dec_exit_usb(struct ttusb_dec *dec)
ttusb_dec_free_iso_urbs(dec);
}

-static void ttusb_dec_exit_tasklet(struct ttusb_dec *dec)
+static void ttusb_dec_exit_work(struct ttusb_dec *dec)
{
struct list_head *item;
struct urb_frame *frame;

- tasklet_kill(&dec->urb_tasklet);
+ cancel_work_sync(&dec->urb_work);

while ((item = dec->urb_frame_list.next) != &dec->urb_frame_list) {
frame = list_entry(item, struct urb_frame, urb_frame_list);
@@ -1703,7 +1704,7 @@ static int ttusb_dec_probe(struct usb_interface *intf,

ttusb_dec_init_v_pes(dec);
ttusb_dec_init_filters(dec);
- ttusb_dec_init_tasklet(dec);
+ ttusb_dec_init_work(dec);

dec->active = 1;

@@ -1729,7 +1730,7 @@ static void ttusb_dec_disconnect(struct usb_interface *intf)
dprintk("%s\n", __func__);

if (dec->active) {
- ttusb_dec_exit_tasklet(dec);
+ ttusb_dec_exit_work(dec);
ttusb_dec_exit_filters(dec);
if(enable_rc)
ttusb_dec_exit_rc(dec);
--
2.17.1