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[v2,01/18] DRM/KMS/EDID: Mask out Segment Bits when calculating Offset.

Message ID 1353579788-30637-2-git-send-email-eich@suse.com (mailing list archive)
State New, archived
Headers show

Commit Message

Egbert Eich Nov. 22, 2012, 10:22 a.m. UTC
This patch is a bit cosmetic as the variable size will truncate
the start address anyway but for readability it should be made
explicite that the lowest bit in the EDID block number determines
the I2C start address.

Signed-off-by: Egbert Eich <eich@suse.com>
---
 drivers/gpu/drm/drm_edid.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index fadcd44..049fa52 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -258,7 +258,7 @@  static int
 drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf,
 		      int block, int len)
 {
-	unsigned char start = block * EDID_LENGTH;
+	unsigned char start = (block & 0x01) * EDID_LENGTH;
 	unsigned char segment = block >> 1;
 	unsigned char xfers = segment ? 3 : 2;
 	int ret, retries = 5;