path: root/drivers
diff options
authorChen-Yu Tsai <wens@csie.org>2019-02-03 11:03:56 -0500
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2019-02-18 15:24:27 -0500
commitd31b282e2c0de9c7fb113516820340251f03a625 (patch)
tree3ca5755db21ca7975375ba3a9f8be6ddec58f8ff /drivers
parentb8eb83457e79fc745abea3abcd6c95b1428a05ee (diff)
media: sun6i: Fix CSI regmap's max_register
max_register is currently set to 0x1000. This is beyond the mapped address range of the hardware, so attempts to dump the regmap from debugfs would trigger a kernel exception. Furthermore, the useful registers only occupy a small section at the beginning of the full range. Change the value to 0x9c, the last known register on the V3s and H3. On the A31, the register range is extended to support additional capture channels. Since this is not yet supported, ignore it for now. Fixes: 5cc7522d8965 ("media: sun6i: Add support for Allwinner CSI V3s") Cc: <stable@vger.kernel.org> Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers')
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
index 5ecdfbf9f6ae..457131c7f74a 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
@@ -803,7 +803,7 @@ static const struct regmap_config sun6i_csi_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
- .max_register = 0x1000,
+ .max_register = 0x9c,
static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,

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