* [RFC PATCH] amba: Ensure drvdata is NULL
@ 2013-09-04 14:44 Michal Simek
2013-09-12 5:57 ` Michal Simek
0 siblings, 1 reply; 2+ messages in thread
From: Michal Simek @ 2013-09-04 14:44 UTC (permalink / raw)
To: linux-kernel, monstr
Cc: Russell King, Vinod Koul, Dan Williams, Dmitry Torokhov,
Chris Ball, Alessandro Zummo, Linus Walleij, Mark Brown,
Greg Kroah-Hartman, Jiri Slaby, Jean-Christophe Plagniol-Villard,
Tomi Valkeinen, Wim Van Sebroeck, Andrew Morton, zhangwei(Jovi),
Randy Dunlap, linux-arm-kernel, linux-input, linux-mmc, rtc-linux,
linux-spi, linux-serial, linux-fbdev, linux-watchdog
[-- Attachment #1: Type: text/plain, Size: 7224 bytes --]
This patch is inpired by the patch for drvdata
"device-core: Ensure drvdata = NULL when no driver is bound"
(sha1: 0998d0631001288a5974afc0b2a5f568bcdecb4d)
Also it fixes all occurences in drivers.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---
arch/arm/kernel/etm.c | 6 ------
drivers/amba/bus.c | 2 ++
drivers/dma/pl330.c | 3 ---
drivers/input/serio/ambakmi.c | 2 --
drivers/mmc/host/mmci.c | 2 --
drivers/rtc/rtc-pl030.c | 2 --
drivers/rtc/rtc-pl031.c | 2 --
drivers/spi/spi-pl022.c | 1 -
drivers/tty/serial/amba-pl010.c | 3 ---
drivers/tty/serial/amba-pl011.c | 3 ---
drivers/video/amba-clcd.c | 2 --
drivers/watchdog/sp805_wdt.c | 1 -
12 files changed, 2 insertions(+), 27 deletions(-)
diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c
index 8ff0ecd..131a6ab 100644
--- a/arch/arm/kernel/etm.c
+++ b/arch/arm/kernel/etm.c
@@ -385,7 +385,6 @@ out:
return ret;
out_unmap:
- amba_set_drvdata(dev, NULL);
iounmap(t->etb_regs);
out_release:
@@ -398,8 +397,6 @@ static int etb_remove(struct amba_device *dev)
{
struct tracectx *t = amba_get_drvdata(dev);
- amba_set_drvdata(dev, NULL);
-
iounmap(t->etb_regs);
t->etb_regs = NULL;
@@ -588,7 +585,6 @@ out:
return ret;
out_unmap:
- amba_set_drvdata(dev, NULL);
iounmap(t->etm_regs);
out_release:
@@ -601,8 +597,6 @@ static int etm_remove(struct amba_device *dev)
{
struct tracectx *t = amba_get_drvdata(dev);
- amba_set_drvdata(dev, NULL);
-
iounmap(t->etm_regs);
t->etm_regs = NULL;
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index c670727..9762090 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -373,6 +373,7 @@ static int amba_probe(struct device *dev)
if (ret == 0)
break;
+ amba_set_drvdata(pcdev, NULL);
pm_runtime_disable(dev);
pm_runtime_set_suspended(dev);
pm_runtime_put_noidle(dev);
@@ -391,6 +392,7 @@ static int amba_remove(struct device *dev)
pm_runtime_get_sync(dev);
ret = drv->remove(pcdev);
+ amba_set_drvdata(pcdev, NULL);
pm_runtime_put_noidle(dev);
/* Undo the runtime PM settings in amba_probe() */
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index fa645d8..626f99e 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -3026,8 +3026,6 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
return 0;
probe_err3:
- amba_set_drvdata(adev, NULL);
-
/* Idle the DMAC */
list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels,
chan.device_node) {
@@ -3061,7 +3059,6 @@ static int pl330_remove(struct amba_device *adev)
of_dma_controller_free(adev->dev.of_node);
dma_async_device_unregister(&pdmac->ddma);
- amba_set_drvdata(adev, NULL);
/* Idle the DMAC */
list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels,
diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c
index 4e2fd44..b7c206d 100644
--- a/drivers/input/serio/ambakmi.c
+++ b/drivers/input/serio/ambakmi.c
@@ -167,8 +167,6 @@ static int amba_kmi_remove(struct amba_device *dev)
{
struct amba_kmi_port *kmi = amba_get_drvdata(dev);
- amba_set_drvdata(dev, NULL);
-
serio_unregister_port(kmi->io);
clk_put(kmi->clk);
iounmap(kmi->base);
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index c3785ed..07e17f1 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1678,8 +1678,6 @@ static int mmci_remove(struct amba_device *dev)
{
struct mmc_host *mmc = amba_get_drvdata(dev);
- amba_set_drvdata(dev, NULL);
-
if (mmc) {
struct mmci_host *host = mmc_priv(mmc);
diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
index 22bacdb..a804f75 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -153,8 +153,6 @@ static int pl030_remove(struct amba_device *dev)
{
struct pl030_rtc *rtc = amba_get_drvdata(dev);
- amba_set_drvdata(dev, NULL);
-
writel(0, rtc->base + RTC_CR);
free_irq(dev->irq[0], rtc);
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 0f0609b..c9ca86e 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -305,7 +305,6 @@ static int pl031_remove(struct amba_device *adev)
{
struct pl031_local *ldata = dev_get_drvdata(&adev->dev);
- amba_set_drvdata(adev, NULL);
free_irq(adev->irq[0], ldata);
rtc_device_unregister(ldata->rtc);
iounmap(ldata->base);
@@ -392,7 +391,6 @@ out_no_irq:
rtc_device_unregister(ldata->rtc);
out_no_rtc:
iounmap(ldata->base);
- amba_set_drvdata(adev, NULL);
out_no_remap:
kfree(ldata);
out:
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index abef061..e12813e 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -2306,7 +2306,6 @@ pl022_remove(struct amba_device *adev)
amba_release_regions(adev);
tasklet_disable(&pl022->pump_transfers);
spi_unregister_master(pl022->master);
- amba_set_drvdata(adev, NULL);
return 0;
}
diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index c368405..f630b78 100644
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -728,7 +728,6 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id)
amba_set_drvdata(dev, uap);
ret = uart_add_one_port(&amba_reg, &uap->port);
if (ret) {
- amba_set_drvdata(dev, NULL);
amba_ports[i] = NULL;
clk_put(uap->clk);
unmap:
@@ -745,8 +744,6 @@ static int pl010_remove(struct amba_device *dev)
struct uart_amba_port *uap = amba_get_drvdata(dev);
int i;
- amba_set_drvdata(dev, NULL);
-
uart_remove_one_port(&amba_reg, &uap->port);
for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 28b35ad..2a1efe0 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -2143,7 +2143,6 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
amba_set_drvdata(dev, uap);
ret = uart_add_one_port(&amba_reg, &uap->port);
if (ret) {
- amba_set_drvdata(dev, NULL);
amba_ports[i] = NULL;
pl011_dma_remove(uap);
}
@@ -2156,8 +2155,6 @@ static int pl011_remove(struct amba_device *dev)
struct uart_amba_port *uap = amba_get_drvdata(dev);
int i;
- amba_set_drvdata(dev, NULL);
-
uart_remove_one_port(&amba_reg, &uap->port);
for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
index 0a2cce7..0bab6ab 100644
--- a/drivers/video/amba-clcd.c
+++ b/drivers/video/amba-clcd.c
@@ -594,8 +594,6 @@ static int clcdfb_remove(struct amba_device *dev)
{
struct clcd_fb *fb = amba_get_drvdata(dev);
- amba_set_drvdata(dev, NULL);
-
clcdfb_disable(fb);
unregister_framebuffer(&fb->fb);
if (fb->fb.cmap.len)
diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c
index 58df98a..3f786ce 100644
--- a/drivers/watchdog/sp805_wdt.c
+++ b/drivers/watchdog/sp805_wdt.c
@@ -268,7 +268,6 @@ static int sp805_wdt_remove(struct amba_device *adev)
struct sp805_wdt *wdt = amba_get_drvdata(adev);
watchdog_unregister_device(&wdt->wdd);
- amba_set_drvdata(adev, NULL);
watchdog_set_drvdata(&wdt->wdd, NULL);
return 0;
--
1.8.2.3
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [RFC PATCH] amba: Ensure drvdata is NULL
2013-09-04 14:44 [RFC PATCH] amba: Ensure drvdata is NULL Michal Simek
@ 2013-09-12 5:57 ` Michal Simek
0 siblings, 0 replies; 2+ messages in thread
From: Michal Simek @ 2013-09-12 5:57 UTC (permalink / raw)
To: Michal Simek, Russell King
Cc: linux-kernel, Vinod Koul, Dan Williams, Dmitry Torokhov,
Chris Ball, Alessandro Zummo, Linus Walleij, Mark Brown,
Greg Kroah-Hartman, Jiri Slaby, Jean-Christophe Plagniol-Villard,
Tomi Valkeinen, Wim Van Sebroeck, Andrew Morton, zhangwei(Jovi),
Randy Dunlap, linux-arm-kernel, linux-input, linux-mmc, rtc-linux,
linux-spi, linux-serial, linux-fbdev, linux-watchdog
[-- Attachment #1: Type: text/plain, Size: 8371 bytes --]
Hi Russell,
any comment on this one?
Thanks,
Michal
On 09/04/2013 04:44 PM, Michal Simek wrote:
> This patch is inpired by the patch for drvdata
> "device-core: Ensure drvdata = NULL when no driver is bound"
> (sha1: 0998d0631001288a5974afc0b2a5f568bcdecb4d)
>
> Also it fixes all occurences in drivers.
>
> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
> ---
> arch/arm/kernel/etm.c | 6 ------
> drivers/amba/bus.c | 2 ++
> drivers/dma/pl330.c | 3 ---
> drivers/input/serio/ambakmi.c | 2 --
> drivers/mmc/host/mmci.c | 2 --
> drivers/rtc/rtc-pl030.c | 2 --
> drivers/rtc/rtc-pl031.c | 2 --
> drivers/spi/spi-pl022.c | 1 -
> drivers/tty/serial/amba-pl010.c | 3 ---
> drivers/tty/serial/amba-pl011.c | 3 ---
> drivers/video/amba-clcd.c | 2 --
> drivers/watchdog/sp805_wdt.c | 1 -
> 12 files changed, 2 insertions(+), 27 deletions(-)
>
> diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c
> index 8ff0ecd..131a6ab 100644
> --- a/arch/arm/kernel/etm.c
> +++ b/arch/arm/kernel/etm.c
> @@ -385,7 +385,6 @@ out:
> return ret;
>
> out_unmap:
> - amba_set_drvdata(dev, NULL);
> iounmap(t->etb_regs);
>
> out_release:
> @@ -398,8 +397,6 @@ static int etb_remove(struct amba_device *dev)
> {
> struct tracectx *t = amba_get_drvdata(dev);
>
> - amba_set_drvdata(dev, NULL);
> -
> iounmap(t->etb_regs);
> t->etb_regs = NULL;
>
> @@ -588,7 +585,6 @@ out:
> return ret;
>
> out_unmap:
> - amba_set_drvdata(dev, NULL);
> iounmap(t->etm_regs);
>
> out_release:
> @@ -601,8 +597,6 @@ static int etm_remove(struct amba_device *dev)
> {
> struct tracectx *t = amba_get_drvdata(dev);
>
> - amba_set_drvdata(dev, NULL);
> -
> iounmap(t->etm_regs);
> t->etm_regs = NULL;
>
> diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
> index c670727..9762090 100644
> --- a/drivers/amba/bus.c
> +++ b/drivers/amba/bus.c
> @@ -373,6 +373,7 @@ static int amba_probe(struct device *dev)
> if (ret == 0)
> break;
>
> + amba_set_drvdata(pcdev, NULL);
> pm_runtime_disable(dev);
> pm_runtime_set_suspended(dev);
> pm_runtime_put_noidle(dev);
> @@ -391,6 +392,7 @@ static int amba_remove(struct device *dev)
>
> pm_runtime_get_sync(dev);
> ret = drv->remove(pcdev);
> + amba_set_drvdata(pcdev, NULL);
> pm_runtime_put_noidle(dev);
>
> /* Undo the runtime PM settings in amba_probe() */
> diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
> index fa645d8..626f99e 100644
> --- a/drivers/dma/pl330.c
> +++ b/drivers/dma/pl330.c
> @@ -3026,8 +3026,6 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
>
> return 0;
> probe_err3:
> - amba_set_drvdata(adev, NULL);
> -
> /* Idle the DMAC */
> list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels,
> chan.device_node) {
> @@ -3061,7 +3059,6 @@ static int pl330_remove(struct amba_device *adev)
> of_dma_controller_free(adev->dev.of_node);
>
> dma_async_device_unregister(&pdmac->ddma);
> - amba_set_drvdata(adev, NULL);
>
> /* Idle the DMAC */
> list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels,
> diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c
> index 4e2fd44..b7c206d 100644
> --- a/drivers/input/serio/ambakmi.c
> +++ b/drivers/input/serio/ambakmi.c
> @@ -167,8 +167,6 @@ static int amba_kmi_remove(struct amba_device *dev)
> {
> struct amba_kmi_port *kmi = amba_get_drvdata(dev);
>
> - amba_set_drvdata(dev, NULL);
> -
> serio_unregister_port(kmi->io);
> clk_put(kmi->clk);
> iounmap(kmi->base);
> diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
> index c3785ed..07e17f1 100644
> --- a/drivers/mmc/host/mmci.c
> +++ b/drivers/mmc/host/mmci.c
> @@ -1678,8 +1678,6 @@ static int mmci_remove(struct amba_device *dev)
> {
> struct mmc_host *mmc = amba_get_drvdata(dev);
>
> - amba_set_drvdata(dev, NULL);
> -
> if (mmc) {
> struct mmci_host *host = mmc_priv(mmc);
>
> diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
> index 22bacdb..a804f75 100644
> --- a/drivers/rtc/rtc-pl030.c
> +++ b/drivers/rtc/rtc-pl030.c
> @@ -153,8 +153,6 @@ static int pl030_remove(struct amba_device *dev)
> {
> struct pl030_rtc *rtc = amba_get_drvdata(dev);
>
> - amba_set_drvdata(dev, NULL);
> -
> writel(0, rtc->base + RTC_CR);
>
> free_irq(dev->irq[0], rtc);
> diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
> index 0f0609b..c9ca86e 100644
> --- a/drivers/rtc/rtc-pl031.c
> +++ b/drivers/rtc/rtc-pl031.c
> @@ -305,7 +305,6 @@ static int pl031_remove(struct amba_device *adev)
> {
> struct pl031_local *ldata = dev_get_drvdata(&adev->dev);
>
> - amba_set_drvdata(adev, NULL);
> free_irq(adev->irq[0], ldata);
> rtc_device_unregister(ldata->rtc);
> iounmap(ldata->base);
> @@ -392,7 +391,6 @@ out_no_irq:
> rtc_device_unregister(ldata->rtc);
> out_no_rtc:
> iounmap(ldata->base);
> - amba_set_drvdata(adev, NULL);
> out_no_remap:
> kfree(ldata);
> out:
> diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
> index abef061..e12813e 100644
> --- a/drivers/spi/spi-pl022.c
> +++ b/drivers/spi/spi-pl022.c
> @@ -2306,7 +2306,6 @@ pl022_remove(struct amba_device *adev)
> amba_release_regions(adev);
> tasklet_disable(&pl022->pump_transfers);
> spi_unregister_master(pl022->master);
> - amba_set_drvdata(adev, NULL);
> return 0;
> }
>
> diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
> index c368405..f630b78 100644
> --- a/drivers/tty/serial/amba-pl010.c
> +++ b/drivers/tty/serial/amba-pl010.c
> @@ -728,7 +728,6 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id)
> amba_set_drvdata(dev, uap);
> ret = uart_add_one_port(&amba_reg, &uap->port);
> if (ret) {
> - amba_set_drvdata(dev, NULL);
> amba_ports[i] = NULL;
> clk_put(uap->clk);
> unmap:
> @@ -745,8 +744,6 @@ static int pl010_remove(struct amba_device *dev)
> struct uart_amba_port *uap = amba_get_drvdata(dev);
> int i;
>
> - amba_set_drvdata(dev, NULL);
> -
> uart_remove_one_port(&amba_reg, &uap->port);
>
> for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
> diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
> index 28b35ad..2a1efe0 100644
> --- a/drivers/tty/serial/amba-pl011.c
> +++ b/drivers/tty/serial/amba-pl011.c
> @@ -2143,7 +2143,6 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
> amba_set_drvdata(dev, uap);
> ret = uart_add_one_port(&amba_reg, &uap->port);
> if (ret) {
> - amba_set_drvdata(dev, NULL);
> amba_ports[i] = NULL;
> pl011_dma_remove(uap);
> }
> @@ -2156,8 +2155,6 @@ static int pl011_remove(struct amba_device *dev)
> struct uart_amba_port *uap = amba_get_drvdata(dev);
> int i;
>
> - amba_set_drvdata(dev, NULL);
> -
> uart_remove_one_port(&amba_reg, &uap->port);
>
> for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
> diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
> index 0a2cce7..0bab6ab 100644
> --- a/drivers/video/amba-clcd.c
> +++ b/drivers/video/amba-clcd.c
> @@ -594,8 +594,6 @@ static int clcdfb_remove(struct amba_device *dev)
> {
> struct clcd_fb *fb = amba_get_drvdata(dev);
>
> - amba_set_drvdata(dev, NULL);
> -
> clcdfb_disable(fb);
> unregister_framebuffer(&fb->fb);
> if (fb->fb.cmap.len)
> diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c
> index 58df98a..3f786ce 100644
> --- a/drivers/watchdog/sp805_wdt.c
> +++ b/drivers/watchdog/sp805_wdt.c
> @@ -268,7 +268,6 @@ static int sp805_wdt_remove(struct amba_device *adev)
> struct sp805_wdt *wdt = amba_get_drvdata(adev);
>
> watchdog_unregister_device(&wdt->wdd);
> - amba_set_drvdata(adev, NULL);
> watchdog_set_drvdata(&wdt->wdd, NULL);
>
> return 0;
> --
> 1.8.2.3
>
--
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform
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