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authorNicholas Mc Guire <der.herr@hofr.at>2015-01-20 06:27:45 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-01-25 09:18:00 -0800
commit3f46d81ae1cf8f20f25c39ae1ab3f1b064698361 (patch)
treeba5612fecded10c5aad55c738fd1d307493fd849 /drivers/misc/ti-st
parent625505b509b38b3a389cb3f4fd6520a46763bf45 (diff)
downloadlinux-3f46d81ae1cf8f20f25c39ae1ab3f1b064698361.tar.bz2
misc: ti-st: add handling of the signal case
if(!wait_for_completion_interruptible_timeout(...)) only handles the timeout case - this patch adds handling the signal case the same as timeout. Only the timeout case was being handled, the signal case (-ERESTARTSYS) was treated just like the case of successful completion, which is most likely not reasonable. read_local_version() is called from download_firmware() where it checks for !=0 return, so the error handling logic should be preserved correctly. download_firmware() is called from st_kim_start() which is checking for !=0 return, so the error handling logic should be preserved correctly Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/ti-st')
-rw-r--r--drivers/misc/ti-st/st_kim.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 7109d28518d3..8fb116f8a152 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -219,6 +219,7 @@ static long read_local_version(struct kim_data_s *kim_gdata, char *bts_scr_name)
{
unsigned short version = 0, chip = 0, min_ver = 0, maj_ver = 0;
const char read_ver_cmd[] = { 0x01, 0x01, 0x10, 0x00 };
+ long timeout;
pr_debug("%s", __func__);
@@ -228,10 +229,11 @@ static long read_local_version(struct kim_data_s *kim_gdata, char *bts_scr_name)
return -EIO;
}
- if (!wait_for_completion_interruptible_timeout(
- &kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME))) {
- pr_err(" waiting for ver info- timed out ");
- return -ETIMEDOUT;
+ timeout = wait_for_completion_interruptible_timeout(
+ &kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME));
+ if (timeout <= 0) {
+ pr_err(" waiting for ver info- timed out or received signal");
+ return timeout ? -ERESTARTSYS : -ETIMEDOUT;
}
reinit_completion(&kim_gdata->kim_rcvd);
/* the positions 12 & 13 in the response buffer provide with the
@@ -395,13 +397,14 @@ static long download_firmware(struct kim_data_s *kim_gdata)
break;
case ACTION_WAIT_EVENT: /* wait */
pr_debug("W");
- if (!wait_for_completion_interruptible_timeout(
+ err = wait_for_completion_interruptible_timeout(
&kim_gdata->kim_rcvd,
- msecs_to_jiffies(CMD_RESP_TIME))) {
- pr_err("response timeout during fw download ");
+ msecs_to_jiffies(CMD_RESP_TIME));
+ if (err <= 0) {
+ pr_err("response timeout/signaled during fw download ");
/* timed out */
release_firmware(kim_gdata->fw_entry);
- return -ETIMEDOUT;
+ return err ? -ERESTARTSYS : -ETIMEDOUT;
}
reinit_completion(&kim_gdata->kim_rcvd);
break;