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authorDu, Changbin <changbin.du@gmail.com>2012-07-24 00:19:25 (GMT)
committerFelipe Balbi <balbi@ti.com>2012-08-23 08:04:18 (GMT)
commit2868fea2d615d9f445a0ccaf988e1418a9787ebe (patch)
treefec590a434a9cf1a52155ec00a4edd971eb5e76b /drivers
parent4fefe9f6de3d6e0b5e58b17cbab9c47c74f88cb6 (diff)
downloadlinux-2868fea2d615d9f445a0ccaf988e1418a9787ebe.tar.xz
usb: gadget: s3c-hsotg: fix core reset timeout failure
The timeout values were 1000 and timeout issue occured many times on my s3c6410 Soc based board (mostly when booting whith USB cable not connected). This patch increase the values to 10000 to guarantee the success of reset. Having set timeout to 10000, I printed the remained timeout values which could cause timeout issue before this change (tested several times). the first timeout value remained: timeout = 8079 timeout = 8079 timeout = 8078 timeout = 8081 the second timeout value remained: timeout = 7940 timeout = 7945 timeout = 7940 timeout = 7938 Seeing from above values, I think the value 10000 is big enough. Signed-off-by: Du, Changbin <changbin.du@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/gadget/s3c-hsotg.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index b13e0bb..a826cb9 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -2197,7 +2197,7 @@ static int s3c_hsotg_corereset(struct s3c_hsotg *hsotg)
/* issue soft reset */
writel(GRSTCTL_CSftRst, hsotg->regs + GRSTCTL);
- timeout = 1000;
+ timeout = 10000;
do {
grstctl = readl(hsotg->regs + GRSTCTL);
} while ((grstctl & GRSTCTL_CSftRst) && timeout-- > 0);
@@ -2207,7 +2207,7 @@ static int s3c_hsotg_corereset(struct s3c_hsotg *hsotg)
return -EINVAL;
}
- timeout = 1000;
+ timeout = 10000;
while (1) {
u32 grstctl = readl(hsotg->regs + GRSTCTL);