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| author |   Arnd Bergmann <arnd@arndb.de> | 2018-01-03 17:35:31 -0500 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-01-05 12:42:19 -0500 |
| commit | 883dd4c1b8d95c78158a993fc383bfbf5463a095 (patch) | |
| tree | 212679b5f45dcbf6166607ad02d9ad90c888f2e8 /drivers/media/pci/intel | |
| parent | media: intel-ipu3: cio2: mark PM functions as __maybe_unused (diff) | |
| download | wireguard-linux-883dd4c1b8d95c78158a993fc383bfbf5463a095.tar.xz wireguard-linux-883dd4c1b8d95c78158a993fc383bfbf5463a095.zip | |
media: intel-ipu3: cio2: fix building with large PAGE_SIZE
The driver apparently assumes that the device uses the same page size
as the CPU, but also assumes that this is 4096 bytes. On architectures
with a larger page size like 65536 bytes, we get a warning about an
integer overflow:
drivers/media/pci/intel/ipu3/ipu3-cio2.c: In function 'cio2_fbpt_entry_init_dummy':
arch/arm64/include/asm/page-def.h:28:20: error: large integer implicitly truncated to unsigned type [-Werror=overflow]
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
^
drivers/media/pci/intel/ipu3/ipu3-cio2.h:404:26: note: in expansion of macro 'PAGE_SIZE'
#define CIO2_PAGE_SIZE PAGE_SIZE
^~~~~~~~~
drivers/media/pci/intel/ipu3/ipu3-cio2.c:172:3: note: in expansion of macro 'CIO2_PAGE_SIZE'
CIO2_PAGE_SIZE / sizeof(u32) * CIO2_MAX_LOPS;
Obviously this won't work, but the driver is also unlikely to ever be
used on such an architecture, so the easiest workaround is to define
the CIO2_PAGE_SIZE macro to the size that the hardware actually uses.
Fixes: c2a6a07afe4a ("media: intel-ipu3: cio2: add new MIPI-CSI2 driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/pci/intel')
| -rw-r--r-- | drivers/media/pci/intel/ipu3/ipu3-cio2.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/pci/intel/ipu3/ipu3-cio2.h b/drivers/media/pci/intel/ipu3/ipu3-cio2.h index 1a559990920f..78a5799f08e7 100644 --- a/drivers/media/pci/intel/ipu3/ipu3-cio2.h +++ b/drivers/media/pci/intel/ipu3/ipu3-cio2.h @@ -401,7 +401,7 @@ struct cio2_device { sizeof(struct cio2_fbpt_entry)) #define CIO2_FBPT_SUBENTRY_UNIT 4 -#define CIO2_PAGE_SIZE PAGE_SIZE +#define CIO2_PAGE_SIZE 4096 /* cio2 fbpt first_entry ctrl status */ #define CIO2_FBPT_CTRL_VALID BIT(0) |