From 3f46d81ae1cf8f20f25c39ae1ab3f1b064698361 Mon Sep 17 00:00:00 2001 From: Nicholas Mc Guire <der.herr@hofr.at> Date: Tue, 20 Jan 2015 06:27:45 +0100 Subject: 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> --- drivers/misc/ti-st/st_kim.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'drivers/misc') 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; -- cgit v1.2.3