[PATCH 1/2] media: rockchip: rkcif: fix off by one bugs

[Michael Riesch via B4 Relay]

From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

Change these comparisons from > vs >= to avoid accessing one element
beyond the end of the arrays.

Fixes: 1f2353f5a1af ("media: rockchip: rkcif: add support for rk3568 vicap mipi capture")
Cc: stable@xxxxxxxxxx
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Michael Riesch <michael.riesch@xxxxxxxxxxxxx>
Signed-off-by: Michael Riesch <michael.riesch@xxxxxxxxxxxxx>
---
 drivers/media/platform/rockchip/rkcif/rkcif-capture-mipi.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/rockchip/rkcif/rkcif-capture-mipi.c b/drivers/media/platform/rockchip/rkcif/rkcif-capture-mipi.c
index 1b81bcc067ef..a933df682acc 100644
--- a/drivers/media/platform/rockchip/rkcif/rkcif-capture-mipi.c
+++ b/drivers/media/platform/rockchip/rkcif/rkcif-capture-mipi.c
@@ -489,8 +489,8 @@ static inline unsigned int rkcif_mipi_get_reg(struct rkcif_interface *interface,
 
 	block = interface->index - RKCIF_MIPI_BASE;
 
-	if (WARN_ON_ONCE(block > RKCIF_MIPI_MAX - RKCIF_MIPI_BASE) ||
-	    WARN_ON_ONCE(index > RKCIF_MIPI_REGISTER_MAX))
+	if (WARN_ON_ONCE(block >= RKCIF_MIPI_MAX - RKCIF_MIPI_BASE) ||
+	    WARN_ON_ONCE(index >= RKCIF_MIPI_REGISTER_MAX))
 		return RKCIF_REGISTER_NOTSUPPORTED;
 
 	offset = rkcif->match_data->mipi->blocks[block].offset;
@@ -510,9 +510,9 @@ static inline unsigned int rkcif_mipi_id_get_reg(struct rkcif_stream *stream,
 	block = stream->interface->index - RKCIF_MIPI_BASE;
 	id = stream->id;
 
-	if (WARN_ON_ONCE(block > RKCIF_MIPI_MAX - RKCIF_MIPI_BASE) ||
-	    WARN_ON_ONCE(id > RKCIF_ID_MAX) ||
-	    WARN_ON_ONCE(index > RKCIF_MIPI_ID_REGISTER_MAX))
+	if (WARN_ON_ONCE(block >= RKCIF_MIPI_MAX - RKCIF_MIPI_BASE) ||
+	    WARN_ON_ONCE(id >= RKCIF_ID_MAX) ||
+	    WARN_ON_ONCE(index >= RKCIF_MIPI_ID_REGISTER_MAX))
 		return RKCIF_REGISTER_NOTSUPPORTED;
 
 	offset = rkcif->match_data->mipi->blocks[block].offset;

-- 
2.39.5