[PATCH v2] staging/ipack: Fix bug introduced by IPack device matching
Samuel Iglesias Gonsálvez
siglesias at igalia.com
Fri Sep 7 08:41:44 UTC 2012
On Fri, 2012-09-07 at 10:29 +0200, Jens Taprogge wrote:
> ~0 can not be casted to u8. Instead of using the IPACK_ANY_ID for the format
> field we introduce a new IPACK_ANY_FORMAT specifically for that field and
> defined as 0xff.
>
> Reported-by: Dan Carpenter <dan.carpenter at oracle.com>
> Signed-off-by: Jens Taprogge <jens.taprogge at taprogge.org>
> ---
> drivers/staging/ipack/ipack.c | 3 ++-
> include/linux/mod_devicetable.h | 1 +
> scripts/mod/file2alias.c | 2 +-
> 3 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/ipack/ipack.c b/drivers/staging/ipack/ipack.c
> index b3736c0..659aadc 100644
> --- a/drivers/staging/ipack/ipack.c
> +++ b/drivers/staging/ipack/ipack.c
> @@ -31,7 +31,8 @@ static inline const struct ipack_device_id *
> ipack_match_one_device(const struct ipack_device_id *id,
> const struct ipack_device *device)
> {
> - if ((id->format == IPACK_ANY_ID || id->format == device->id_format) &&
> + if ((id->format == IPACK_ANY_FORMAT ||
> + id->format == device->id_format) &&
> (id->vendor == IPACK_ANY_ID || id->vendor == device->id_vendor) &&
> (id->device == IPACK_ANY_ID || id->device == device->id_device))
> return id;
> diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
> index 999c4c2..70c6a35 100644
> --- a/include/linux/mod_devicetable.h
> +++ b/include/linux/mod_devicetable.h
> @@ -600,6 +600,7 @@ struct x86_cpu_id {
> #define X86_MODEL_ANY 0
> #define X86_FEATURE_ANY 0 /* Same as FPU, you can't test for that */
>
> +#define IPACK_ANY_FORMAT 0xff
> #define IPACK_ANY_ID (~0)
> struct ipack_device_id {
> __u8 format; /* Format version or IPACK_ANY_ID */
> diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
> index 3c22bda..df4fc23 100644
> --- a/scripts/mod/file2alias.c
> +++ b/scripts/mod/file2alias.c
> @@ -973,7 +973,7 @@ static int do_ipack_entry(const char *filename,
> id->vendor = TO_NATIVE(id->vendor);
> id->device = TO_NATIVE(id->device);
> strcpy(alias, "ipack:");
> - ADD(alias, "f", id->format != IPACK_ANY_ID, id->format);
> + ADD(alias, "f", id->format != IPACK_ANY_FORMAT, id->format);
> ADD(alias, "v", id->vendor != IPACK_ANY_ID, id->vendor);
> ADD(alias, "d", id->device != IPACK_ANY_ID, id->device);
> add_wildcard(alias);
Acked-by: Samuel Iglesias Gonsálvez <siglesias at igalia.com>
Thanks,
Sam
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