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msm: mdss: dp: fix parity byte calculation

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Fix the parity byte calculation for Audio SDP's that are
sent to the sink during audio playback. If the input data
for the parity byte calculation is only a byte in length,
then the shift operation must only take the first two
nibbles of the byte.

CRs-Fixed: 1076516
Change-Id: Ib686a9aa5198c8e1b30cf37bb3d9c8b259d5fd84
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>
This commit is contained in:
Tatenda Chipeperekwa 2016-11-18 13:26:10 -08:00 • committed by Gerrit - the friendly Code Review server
parent bc41dd07f8
commit 15a1ac8898
1 changed files with 2 additions and 1 deletions
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3
drivers/video/fbdev/msm/mdss_dp_util.c
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@ -605,8 +605,9 @@ static u8 mdss_dp_calculate_parity_byte(u32 data)
u8 iData = 0;
u8 i = 0;
u8 parityByte;
u8 num_byte = (data & 0xFF00) > 0 ? 8 : 2;
for (i = 0; i < 8; i++) {
for (i = 0; i < num_byte; i++) {
iData = (data >> i*4) & 0xF;
ci = iData ^ x1;