linux-kernel - Re: [PATCH v2] firmware: turris-mox-rwtm: Fix an error handling path in mox_get_board

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Message-ID: <20230712131629.3161d6c9@thinkpad>
Date:   Wed, 12 Jul 2023 13:16:29 +0200
From:   Marek Behún <kabel@...nel.org>
To:     Grégory Clement <gregory.clement@...tlin.com>
Cc:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] firmware: turris-mox-rwtm: Fix an error handling
 path in mox_get_board_info()

Gregory, could you take this patch via mvebu?

On Tue, 11 Jul 2023 18:44:36 +0200
Christophe JAILLET <christophe.jaillet@...adoo.fr> wrote:

> Le 17/02/2023 à 12:21, Marek Behún a écrit :
> > On Wed, 15 Feb 2023 10:30:02 +0100
> > Christophe JAILLET <christophe.jaillet@...adoo.fr> wrote:
> >   
> >> wait_for_completion_timeout() returns 0 if timed out, and positive (at
> >> least 1, or number of jiffies left till timeout) if completed.
> >>
> >> In case of timeout, return -ETIMEDOUT.
> >>
> >> Fixes: 389711b37493 ("firmware: Add Turris Mox rWTM firmware driver")
> >> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> >> ---
> >> Compile tested only.
> >>
> >> v2:
> >>     - Fix some other wait_for_completion_timeout() calls
> >>
> >> ---
> >>   drivers/firmware/turris-mox-rwtm.c | 12 ++++++------
> >>   1 file changed, 6 insertions(+), 6 deletions(-)
> >>
> >> diff --git a/drivers/firmware/turris-mox-rwtm.c b/drivers/firmware/turris-mox-rwtm.c
> >> index 6ea5789a89e2..d6fc37ba897d 100644
> >> --- a/drivers/firmware/turris-mox-rwtm.c
> >> +++ b/drivers/firmware/turris-mox-rwtm.c
> >> @@ -200,8 +200,8 @@ static int mox_get_board_info(struct mox_rwtm *rwtm)
> >>   		return ret;
> >>   
> >>   	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
> >> -	if (ret < 0)
> >> -		return ret;
> >> +	if (ret == 0)
> >> +		return -ETIMEDOUT;
> >>   
> >>   	ret = mox_get_status(MBOX_CMD_BOARD_INFO, reply->retval);
> >>   	if (ret == -ENODATA) {
> >> @@ -236,8 +236,8 @@ static int mox_get_board_info(struct mox_rwtm *rwtm)
> >>   		return ret;
> >>   
> >>   	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
> >> -	if (ret < 0)
> >> -		return ret;
> >> +	if (ret == 0)
> >> +		return -ETIMEDOUT;
> >>   
> >>   	ret = mox_get_status(MBOX_CMD_ECDSA_PUB_KEY, reply->retval);
> >>   	if (ret == -ENODATA) {
> >> @@ -275,8 +275,8 @@ static int check_get_random_support(struct mox_rwtm *rwtm)
> >>   		return ret;
> >>   
> >>   	ret = wait_for_completion_timeout(&rwtm->cmd_done, HZ / 2);
> >> -	if (ret < 0)
> >> -		return ret;
> >> +	if (ret == 0)
> >> +		return -ETIMEDOUT;
> >>   
> >>   	return mox_get_status(MBOX_CMD_GET_RANDOM, rwtm->reply.retval);
> >>   }  
> > 
> > Reviewed-by: Marek Behún <kabel@...nel.org>
> >   
> 
> Hi,
> polite reminder.
> 
> CJ