media: i2c: ov5647: Use bus-locked i2c_transfer()

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The ov5647_read() functions calls i2c_master_send() and
i2c_master_read() in sequence. However this leaves space for other
clients to contend the bus and insert an unrelated transaction in between
the two calls.

Replace the two calls with a single i2c_transfer() one, that locks the
bus in between the transactions.

Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Tommaso Merciai <tomm.merciai@gmail.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

...

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Jacopo Mondi 2023-02-21 18:10:48 +01:00 • committed by Mauro Carvalho Chehab

parent ca4331bd0d

commit 0d840d425e

1 changed files with 18 additions and 12 deletions

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drivers/media/i2c/ov5647.c

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