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Commit e6e1409d authored by Christophe JAILLET's avatar Christophe JAILLET Committed by Greg Kroah-Hartman
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media: v4l: cadence: Fix how unsued lanes are handled in 'csi2rx_start()' 



commit 2eca8e4c1df4864b937752c3aa2f7925114f4806 upstream.

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: 1fc3b37f ("media: v4l: cadence: Add Cadence MIPI-CSI2 RX driver")
Signed-off-by: default avatarChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 83072371

drivers/media/platform/cadence/cdns-csi2rx.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

	}