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GCC with W=2 level of kernel compiler warnings warns about the use of
uninitialised variables in a few locations. While these uninitialised
variables were not used in reality, this still produced compiler warnings.
Address this by assigning the variables to NULL and checking for NULL in
places it is not expected, returning -EIO in that case. This provides
at least some sanity checking at runtime as the compiler appears unable to
do that at compile time.
Reported-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
struct device is used in ccs-data.h but no definition is included. Add a
forward definition.
Also ccs-data.c includes linux/types.h but this is already included in
ccs-data.h which ccs-data.c includes. Do don't include linux/types.h in
ccs-data.c.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Fix obtaining CCS static data version minor part correctly. Instead, the
upper 8 bits were obtained from the major version number.
Fixes: a6b396f410b1 ("media: ccs: Add CCS static data parser library")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Add a parser library for parsing the CCS static data format.
The library may be also compiled in user space as the format has uses also
in the user space. Therefore it is dual licensed under the 3-clause BSD
license as well.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
