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| author |   James Clark <james.clark@arm.com> | 2023-11-01 11:52:06 +0000 |
|---|---|---|
| committer |   Suzuki K Poulose <suzuki.poulose@arm.com> | 2023-11-16 11:40:59 +0000 |
| commit | cc0271a339cc70cae914c3ec20edc2a8058407da (patch) | |
| tree | 25fe105d7074c8378f62e9d066c242549ae7c7c3 /drivers/hwtracing | |
| parent | coresight-tpdm: Correct the property name of MSR number (diff) | |
| download | wireguard-linux-cc0271a339cc70cae914c3ec20edc2a8058407da.tar.xz wireguard-linux-cc0271a339cc70cae914c3ec20edc2a8058407da.zip | |
coresight: etm4x: Fix width of CCITMIN field
CCITMIN is a 12 bit field and doesn't fit in a u8, so extend it to u16.
This probably wasn't an issue previously because values higher than 255
never occurred.
But since commit 4aff040bcc8d ("coresight: etm: Override TRCIDR3.CCITMIN
on errata affected cpus"), a comparison with 256 was done to enable the
errata, generating the following W=1 build error:
coresight-etm4x-core.c:1188:24: error: result of comparison of
constant 256 with expression of type 'u8' (aka 'unsigned char') is
always false [-Werror,-Wtautological-constant-out-of-range-compare]
if (drvdata->ccitmin == 256)
Cc: stable@vger.kernel.org
Fixes: 2e1cdfe184b5 ("coresight-etm4x: Adding CoreSight ETM4x driver")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202310302043.as36UFED-lkp@intel.com/
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: James Clark <james.clark@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20231101115206.70810-1-james.clark@arm.com
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h index 20e2e4cb7614..da17b6c49b0f 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.h +++ b/drivers/hwtracing/coresight/coresight-etm4x.h @@ -1036,7 +1036,7 @@ struct etmv4_drvdata { u8 ctxid_size; u8 vmid_size; u8 ccsize; - u8 ccitmin; + u16 ccitmin; u8 s_ex_level; u8 ns_ex_level; u8 q_support; |