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media: cadence: csi2rx: Fix csi2rx_start error handling

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The clocks enabled by csi2rx_start function are intended to be disabled in
an error path but there are two issues:

1) the loop condition is always true and

2) the first clock disabled is the the one enabling of which failed.

Fix these two bugs by changing the loop condition as well as only disabling
the clocks that were actually enabled.

Reported-by: Mauro Chehab <mchehab@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Sakari Ailus 2018-05-09 16:24:35 -04:00 committed by Mauro Carvalho Chehab
parent 844ef04249
commit 28d42d2fca
1 changed files with 2 additions and 2 deletions
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4
drivers/media/platform/cadence/cdns-csi2rx.c
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@ -174,8 +174,8 @@ static int csi2rx_start(struct csi2rx_priv *csi2rx)
return 0;
err_disable_pixclk:
for (; i >= 0; i--)
clk_disable_unprepare(csi2rx->pixel_clk[i]);
for (; i > 0; i--)
clk_disable_unprepare(csi2rx->pixel_clk[i - 1]);
err_disable_pclk:
clk_disable_unprepare(csi2rx->p_clk);