diff options
| author | Ingo Molnar <mingo@kernel.org> | 2014-01-12 17:12:44 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-01-12 17:12:44 +0400 |
| commit | dba861461f88c12249ac78fb877866c04f99deb3 (patch) | |
| tree | 5812b143581bcc66c7c542f01ba0cb22e489b8e5 /drivers/gpu/drm/radeon/atombios_i2c.c | |
| parent | 0e6601eee039893a3f6420596ae4588d90d13cbe (diff) | |
| parent | 228fdc083b017eaf90e578fa86fb1ecfd5ffae87 (diff) | |
| download | linux-dba861461f88c12249ac78fb877866c04f99deb3.tar.xz | |
Merge branch 'linus' into timers/core
Pick up the latest fixes and refresh the branch.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_i2c.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_i2c.c b/drivers/gpu/drm/radeon/atombios_i2c.c index 0652ee0a2098..f685035dbe39 100644 --- a/drivers/gpu/drm/radeon/atombios_i2c.c +++ b/drivers/gpu/drm/radeon/atombios_i2c.c @@ -44,7 +44,7 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan, PROCESS_I2C_CHANNEL_TRANSACTION_PS_ALLOCATION args; int index = GetIndexIntoMasterTable(COMMAND, ProcessI2cChannelTransaction); unsigned char *base; - u16 out; + u16 out = cpu_to_le16(0); memset(&args, 0, sizeof(args)); @@ -55,11 +55,14 @@ static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan, DRM_ERROR("hw i2c: tried to write too many bytes (%d vs 3)\n", num); return -EINVAL; } - args.ucRegIndex = buf[0]; - if (num > 1) { + if (buf == NULL) + args.ucRegIndex = 0; + else + args.ucRegIndex = buf[0]; + if (num) num--; + if (num) memcpy(&out, &buf[1], num); - } args.lpI2CDataOut = cpu_to_le16(out); } else { if (num > ATOM_MAX_HW_I2C_READ) { @@ -96,14 +99,14 @@ int radeon_atom_hw_i2c_xfer(struct i2c_adapter *i2c_adap, struct radeon_i2c_chan *i2c = i2c_get_adapdata(i2c_adap); struct i2c_msg *p; int i, remaining, current_count, buffer_offset, max_bytes, ret; - u8 buf = 0, flags; + u8 flags; /* check for bus probe */ p = &msgs[0]; if ((num == 1) && (p->len == 0)) { ret = radeon_process_i2c_ch(i2c, p->addr, HW_I2C_WRITE, - &buf, 1); + NULL, 0); if (ret) return ret; else |