From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: mripard@kernel.org, mchehab@kernel.org
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH v2] media: v4l: cadence: Fix how unsued lanes are handled in 'csi2rx_start()'
Date: Fri, 13 Sep 2019 21:06:47 +0200 [thread overview]
Message-ID: <20190913190647.18334-1-christophe.jaillet@wanadoo.fr> (raw)
The 2nd parameter of 'find_first_zero_bit()' is a number of bits, not of
bytes. So use 'csi2rx->max_lanes' instead of 'sizeof(lanes_used)'.
Fixes: 1fc3b37f34f6 ("media: v4l: cadence: Add Cadence MIPI-CSI2 RX driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
v2: use csi2rx->max_lanes instead of BITS_PER_LONG
---
drivers/media/platform/cadence/cdns-csi2rx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c
index 31ace114eda1..be9ec59774d6 100644
--- a/drivers/media/platform/cadence/cdns-csi2rx.c
+++ b/drivers/media/platform/cadence/cdns-csi2rx.c
@@ -129,7 +129,7 @@ static int csi2rx_start(struct csi2rx_priv *csi2rx)
*/
for (i = csi2rx->num_lanes; i < csi2rx->max_lanes; i++) {
unsigned int idx = find_first_zero_bit(&lanes_used,
- sizeof(lanes_used));
+ csi2rx->max_lanes);
set_bit(idx, &lanes_used);
reg |= CSI2RX_STATIC_CFG_DLANE_MAP(i, i + 1);
}
--
2.20.1
reply other threads:[~2019-09-13 19:07 UTC|newest]
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