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drm/radeon: change function signature to pass full range

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In function ‘radeon_process_i2c_ch’ a comparison of a u8 value against
255 is done. Since it is always false, change the signature of this
function to use an `int` instead, which match the type used in caller:
`radeon_atom_hw_i2c_xfer`.

Fix the following warning triggered with W=1:

  CC [M]  drivers/gpu/drm/radeon/atombios_i2c.o
  drivers/gpu/drm/radeon/atombios_i2c.c: In function ‘radeon_process_i2c_ch’:
  drivers/gpu/drm/radeon/atombios_i2c.c:71:11: warning: comparison is always false due to limited range of data type [-Wtype-limits]
   if (num > ATOM_MAX_HW_I2C_READ) {
           ^

Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mathieu Malaterre 2018-04-12 21:33:33 +02:00 committed by Alex Deucher
parent 066689161a
commit 1f81fbc4ce
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/radeon/atombios_i2c.c
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@ -35,7 +35,7 @@
static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan, static int radeon_process_i2c_ch(struct radeon_i2c_chan *chan,
u8 slave_addr, u8 flags, u8 slave_addr, u8 flags,
u8 *buf, u8 num) u8 *buf, int num)
{ {
struct drm_device *dev = chan->dev; struct drm_device *dev = chan->dev;
struct radeon_device *rdev = dev->dev_private; struct radeon_device *rdev = dev->dev_private;