| Message ID | 20180103223546.3546694-1-arnd@arndb.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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)
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> --- drivers/media/pci/intel/ipu3/ipu3-cio2.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)