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Groups > linux.kernel > #1284904 > unrolled thread

[PATCH] drm: msm: dsi: Added missing mutex_unlock

Started bySaurabh Sengar <saurabh.truth@gmail.com>
First post2015-12-06 21:00 +0100
Last post2015-12-07 18:00 +0100
Articles 2 — 2 participants

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  [PATCH] drm: msm: dsi: Added missing mutex_unlock Saurabh Sengar <saurabh.truth@gmail.com> - 2015-12-06 21:00 +0100
    Re: [PATCH] drm: msm: dsi: Added missing mutex_unlock Rob Clark <robdclark@gmail.com> - 2015-12-07 18:00 +0100

#1284904 — [PATCH] drm: msm: dsi: Added missing mutex_unlock

FromSaurabh Sengar <saurabh.truth@gmail.com>
Date2015-12-06 21:00 +0100
Subject[PATCH] drm: msm: dsi: Added missing mutex_unlock
Message-ID<qCNDs-2Pc-7@gated-at.bofh.it>
in case of failed to get iova, function was returning without releasing
the mutex. Added it.

Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 4c49868..13f937b 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -849,11 +849,11 @@ static int dsi_tx_buf_alloc(struct msm_dsi_host *msm_host, int size)
 	}
 
 	ret = msm_gem_get_iova_locked(msm_host->tx_gem_obj, 0, &iova);
+	mutex_unlock(&dev->struct_mutex);
 	if (ret) {
 		pr_err("%s: failed to get iova, %d\n", __func__, ret);
 		return ret;
 	}
-	mutex_unlock(&dev->struct_mutex);
 
 	if (iova & 0x07) {
 		pr_err("%s: buf NOT 8 bytes aligned\n", __func__);
-- 
1.9.1

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#1285799

FromRob Clark <robdclark@gmail.com>
Date2015-12-07 18:00 +0100
Message-ID<qD7iO-78M-9@gated-at.bofh.it>
In reply to#1284904
On Sun, Dec 6, 2015 at 2:49 PM, Saurabh Sengar <saurabh.truth@gmail.com> wrote:
> in case of failed to get iova, function was returning without releasing
> the mutex. Added it.
>
> Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>

Reviewed-by: Rob Clark <robdclark@gmail.com>

> ---
>  drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
> index 4c49868..13f937b 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
> @@ -849,11 +849,11 @@ static int dsi_tx_buf_alloc(struct msm_dsi_host *msm_host, int size)
>         }
>
>         ret = msm_gem_get_iova_locked(msm_host->tx_gem_obj, 0, &iova);
> +       mutex_unlock(&dev->struct_mutex);
>         if (ret) {
>                 pr_err("%s: failed to get iova, %d\n", __func__, ret);
>                 return ret;
>         }
> -       mutex_unlock(&dev->struct_mutex);
>
>         if (iova & 0x07) {
>                 pr_err("%s: buf NOT 8 bytes aligned\n", __func__);
> --
> 1.9.1
>
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