* [KJ] [PATCH 12/21] polling loops: change exit condition to
@ 2005-12-04 0:19 Marcin Slusarz
0 siblings, 0 replies; only message in thread
From: Marcin Slusarz @ 2005-12-04 0:19 UTC (permalink / raw)
To: kernel-janitors
BTTV VIDEO4LINUX DRIVER
P: Mauro Carvalho Chehab
M: mchehab@brturbo.com.br
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
diff -upr -X linux-2.6.15-rc4/Documentation/dontdiff linux-2.6.15-rc4-orig/drivers/media/video/bttv-driver.c linux-2.6.15-rc4/drivers/media/video/bttv-driver.c
--- linux-2.6.15-rc4-orig/drivers/media/video/bttv-driver.c 2005-12-03 15:22:33.000000000 +0100
+++ linux-2.6.15-rc4/drivers/media/video/bttv-driver.c 2005-12-03 16:53:10.000000000 +0100
@@ -749,10 +749,10 @@ static void set_pll_freq(struct bttv *bt
static void set_pll(struct bttv *btv)
{
- int i;
+ unsigned long end_time;
- if (!btv->pll.pll_crystal)
- return;
+ if (!btv->pll.pll_crystal)
+ return;
if (btv->pll.pll_ofreq = btv->pll.pll_current) {
dprintk("bttv%d: PLL: no change required\n",btv->c.nr);
@@ -775,23 +775,24 @@ static void set_pll(struct bttv *btv)
btv->pll.pll_ifreq, btv->pll.pll_ofreq);
set_pll_freq(btv, btv->pll.pll_ifreq, btv->pll.pll_ofreq);
- for (i=0; i<10; i++) {
+ end_time = jiffies + msecs_to_jiffies(100);
+ while (time_before(jiffies, end_time)) {
/* Let other people run while the PLL stabilizes */
bttv_printk(".");
msleep(10);
- if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) {
+ if (btread(BT848_DSTATUS) & BT848_DSTATUS_PLOCK) {
btwrite(0,BT848_DSTATUS);
- } else {
- btwrite(0x08,BT848_TGCTRL);
- btv->pll.pll_current = btv->pll.pll_ofreq;
+ } else {
+ btwrite(0x08,BT848_TGCTRL);
+ btv->pll.pll_current = btv->pll.pll_ofreq;
bttv_printk(" ok\n");
- return;
- }
- }
- btv->pll.pll_current = -1;
+ return;
+ }
+ }
+ btv->pll.pll_current = -1;
bttv_printk("failed\n");
- return;
+ return;
}
/* used to switch between the bt848's analog/digital video capture modes */
diff -upr -X linux-2.6.15-rc4/Documentation/dontdiff linux-2.6.15-rc4-orig/drivers/media/video/cpia.c linux-2.6.15-rc4/drivers/media/video/cpia.c
--- linux-2.6.15-rc4-orig/drivers/media/video/cpia.c 2005-11-20 16:53:15.000000000 +0100
+++ linux-2.6.15-rc4/drivers/media/video/cpia.c 2005-12-03 16:53:10.000000000 +0100
@@ -194,9 +194,6 @@ enum {
#define DARK_TIME 3
#define LIGHT_TIME 3
-/* Maximum number of 10ms loops to wait for the stream to become ready */
-#define READY_TIMEOUT 100
-
/* Developer's Guide Table 5 p 3-34
* indexed by [mains][sensorFps.baserate][sensorFps.divisor]*/
static u8 flicker_jumps[2][2][4] @@ -2830,6 +2827,7 @@ static int fetch_frame(void *data)
int image_size, retry;
struct cam_data *cam = (struct cam_data *)data;
unsigned long oldjif, rate, diff;
+ unsigned long end_time;
/* Allow up to two bad images in a row to be read and
* ignored before an error is reported */
@@ -2858,10 +2856,10 @@ static int fetch_frame(void *data)
if (cam->ops->wait_for_stream_ready) {
/* loop until image ready */
- int count = 0;
do_command(cam, CPIA_COMMAND_GetCameraStatus,0,0,0,0);
+ end_time = jiffies + msecs_to_jiffies(1000);
while (cam->params.status.streamState != STREAM_READY) {
- if(++count > READY_TIMEOUT)
+ if (time_after(jiffies, end_time))
break;
if(cam->params.status.streamState =
STREAM_PAUSED) {
diff -upr -X linux-2.6.15-rc4/Documentation/dontdiff linux-2.6.15-rc4-orig/drivers/media/video/c-qcam.c linux-2.6.15-rc4/drivers/media/video/c-qcam.c
--- linux-2.6.15-rc4-orig/drivers/media/video/c-qcam.c 2005-11-20 16:53:15.000000000 +0100
+++ linux-2.6.15-rc4/drivers/media/video/c-qcam.c 2005-12-03 16:53:10.000000000 +0100
@@ -91,7 +91,7 @@ static unsigned int qcam_await_ready1(st
int value)
{
unsigned long oldjiffies = jiffies;
- unsigned int i;
+ unsigned long end_time;
for (oldjiffies = jiffies; (jiffies - oldjiffies) < (HZ/25); )
if (qcam_ready1(qcam) = value)
@@ -99,7 +99,8 @@ static unsigned int qcam_await_ready1(st
/* If the camera didn't respond within 1/25 second, poll slowly
for a while. */
- for (i = 0; i < 50; i++)
+ end_time = jiffies + msecs_to_jiffies(5000);
+ while (time_before(jiffies, end_time))
{
if (qcam_ready1(qcam) = value)
return 0;
@@ -116,7 +117,7 @@ static unsigned int qcam_await_ready1(st
static unsigned int qcam_await_ready2(struct qcam_device *qcam, int value)
{
unsigned long oldjiffies = jiffies;
- unsigned int i;
+ unsigned long end_time;
for (oldjiffies = jiffies; (jiffies - oldjiffies) < (HZ/25); )
if (qcam_ready2(qcam) = value)
@@ -124,7 +125,8 @@ static unsigned int qcam_await_ready2(st
/* If the camera didn't respond within 1/25 second, poll slowly
for a while. */
- for (i = 0; i < 50; i++)
+ end_time = jiffies + msecs_to_jiffies(5000);
+ while (time_before(jiffies, end_time))
{
if (qcam_ready2(qcam) = value)
return 0;
diff -upr -X linux-2.6.15-rc4/Documentation/dontdiff linux-2.6.15-rc4-orig/drivers/media/video/cx88/cx88-core.c linux-2.6.15-rc4/drivers/media/video/cx88/cx88-core.c
--- linux-2.6.15-rc4-orig/drivers/media/video/cx88/cx88-core.c 2005-12-03 15:22:33.000000000 +0100
+++ linux-2.6.15-rc4/drivers/media/video/cx88/cx88-core.c 2005-12-03 16:53:10.000000000 +0100
@@ -805,7 +805,7 @@ static int set_pll(struct cx88_core *cor
static u32 pre[] = { 0, 0, 0, 3, 2, 1 };
u64 pll;
u32 reg;
- int i;
+ unsigned long end_time;
if (prescale < 2)
prescale = 2;
@@ -823,7 +823,9 @@ static int set_pll(struct cx88_core *cor
dprintk(1,"set_pll: MO_PLL_REG 0x%08x [old=0x%08x,freq=%d]\n",
reg, cx_read(MO_PLL_REG), ofreq);
cx_write(MO_PLL_REG, reg);
- for (i = 0; i < 100; i++) {
+
+ end_time = jiffies + msecs_to_jiffies(1000);
+ while (time_before(jiffies, end_time)) {
reg = cx_read(MO_DEVICE_STATUS);
if (reg & (1<<2)) {
dprintk(1,"pll locked [pre=%d,ofreq=%d]\n",
diff -upr -X linux-2.6.15-rc4/Documentation/dontdiff linux-2.6.15-rc4-orig/drivers/media/video/meye.c linux-2.6.15-rc4/drivers/media/video/meye.c
--- linux-2.6.15-rc4-orig/drivers/media/video/meye.c 2005-11-20 16:53:15.000000000 +0100
+++ linux-2.6.15-rc4/drivers/media/video/meye.c 2005-12-03 16:53:10.000000000 +0100
@@ -558,15 +558,19 @@ static void mchip_dma_free(void)
reset the dma engine */
static void mchip_hic_stop(void)
{
- int i, j;
+ unsigned long end_time, end_time2;
meye.mchip_mode = MCHIP_HIC_MODE_NOOP;
if (!(mchip_read(MCHIP_HIC_STATUS) & MCHIP_HIC_STATUS_BUSY))
return;
- for (i = 0; i < 20; ++i) {
+
+ end_time = jiffies + msecs_to_jiffies(7000);
+ while (time_before(jiffies, end_time)) {
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_STOP);
mchip_delay(MCHIP_HIC_CMD, 0);
- for (j = 0; j < 100; ++j) {
+
+ end_time2 = jiffies + msecs_to_jiffies(100);
+ while (time_before(jiffies, end_time2)) {
if (mchip_delay(MCHIP_HIC_STATUS,
MCHIP_HIC_STATUS_IDLE))
return;
@@ -660,7 +664,7 @@ static int mchip_comp_read_frame(u32 v,
/* take a picture into SDRAM */
static void mchip_take_picture(void)
{
- int i;
+ unsigned long end_time;
mchip_hic_stop();
mchip_subsample();
@@ -671,7 +675,8 @@ static void mchip_take_picture(void)
mchip_delay(MCHIP_HIC_CMD, 0);
- for (i = 0; i < 100; ++i) {
+ end_time = jiffies + msecs_to_jiffies(100);
+ while (time_before(jiffies, end_time)) {
if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
break;
msleep(1);
@@ -683,12 +688,14 @@ static void mchip_get_picture(u8 *buf, i
{
u32 v;
int i;
+ unsigned long end_time;
mchip_set(MCHIP_HIC_MODE, MCHIP_HIC_MODE_STILL_OUT);
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
mchip_delay(MCHIP_HIC_CMD, 0);
- for (i = 0; i < 100; ++i) {
+ end_time = jiffies + msecs_to_jiffies(100);
+ while (time_before(jiffies, end_time)) {
if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
break;
msleep(1);
@@ -724,6 +731,7 @@ static int mchip_compress_frame(u8 *buf,
{
u32 v;
int len = -1, i;
+ unsigned long end_time;
mchip_vrj_setup(0x3f);
udelay(50);
@@ -732,7 +740,9 @@ static int mchip_compress_frame(u8 *buf,
mchip_set(MCHIP_HIC_CMD, MCHIP_HIC_CMD_START);
mchip_delay(MCHIP_HIC_CMD, 0);
- for (i = 0; i < 100; ++i) {
+
+ end_time = jiffies + msecs_to_jiffies(100);
+ while (time_before(jiffies, end_time)) {
if (mchip_delay(MCHIP_HIC_STATUS, MCHIP_HIC_STATUS_IDLE))
break;
msleep(1);
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2005-12-04 0:19 [KJ] [PATCH 12/21] polling loops: change exit condition to Marcin Slusarz
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