Dave pulled tinydrm yesterday which triggered some compiler warnings:
Dave Airlie:
drivers/gpu/drm/tinydrm/mipi-dbi.c: In function
‘mipi_dbi_debugfs_command_write’:
drivers/gpu/drm/tinydrm/mipi-dbi.c:905:8: warning: ‘cmd’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
ret = mipi_dbi_command_buf(mipi, cmd, parameters, i);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I didn't see this on gcc 4.8, but it showed up when I used gcc 6.2.
kbuild test robot:
[drm:drm-next 1199/1208] drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c:198:26:
error: redefinition of 'tinydrm_of_find_backlight'
kbuild test robot:
drivers/gpu/drm/tinydrm/mipi-dbi.c: In function 'mipi_dbi_typec1_command':
>> drivers/gpu/drm/tinydrm/mipi-dbi.c:65:20: warning: field width specifier '*'
>> expects argument of type 'int', but argument 5 has type 'size_t {aka long
>> unsigned int}' [-Wformat=]
DRM_DEBUG_DRIVER("cmd=%02x, par=%*ph\n", cmd, len, data); \
^
include/drm/drmP.h:228:40: note: in definition of macro 'DRM_DEBUG_DRIVER'
drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
^~~
>> drivers/gpu/drm/tinydrm/mipi-dbi.c:671:2: note: in expansion of macro
>> 'MIPI_DBI_DEBUG_COMMAND'
MIPI_DBI_DEBUG_COMMAND(cmd, parameters, num);
^~~~~~~~~~~~~~~~~~~~~~
Noralf.
Noralf Trønnes (3):
drm/tinydrm: mipi-dbi: Silence: ‘cmd’ may be used uninitialized
drm/tinydrm: mipi-dbi: Fix field width specifier warning
drm/tinydrm: helpers: Properly fix backlight dependency
drivers/gpu/drm/tinydrm/mipi-dbi.c | 6 +++---
include/drm/tinydrm/tinydrm-helpers.h | 19 -------------------
2 files changed, 3 insertions(+), 22 deletions(-)
--
2.10.2
