| Message ID | 122503017ada249fbf12be3fa4ee6ccb8f8c78cc.1732156624.git.xiaopei01@kylinos.cn (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | coresight: Fix dsb_mode_store() unsigned val is never less than zero | expand |
On 21/11/2024 2:40 am, Pei Xiao wrote: > dsb_mode_store() warn: unsigned 'val' is never less than zero. > > Reported-by: kernel test robot <lkp@intel.com> > Closes: https://lore.kernel.org/oe-kbuild-all/202410150702.UaZ7kvet-lkp@intel.com/ > Fixes: 018e43ad1eee ("coresight-tpdm: Add node to set dsb programming mode") > Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn> > --- > drivers/hwtracing/coresight/coresight-tpdm.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c > index b7d99e91ab84..158950243d83 100644 > --- a/drivers/hwtracing/coresight/coresight-tpdm.c > +++ b/drivers/hwtracing/coresight/coresight-tpdm.c > @@ -640,8 +640,7 @@ static ssize_t dsb_mode_store(struct device *dev, > struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); > unsigned long val; > > - if ((kstrtoul(buf, 0, &val)) || (val < 0) || > - (val & ~TPDM_DSB_MODE_MASK)) > + if ((kstrtoul(buf, 0, &val)) || (val & ~TPDM_DSB_MODE_MASK)) > return -EINVAL; > > spin_lock(&drvdata->spinlock); Reviewed-by: James Clark <james.clark@linaro.org>
diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index b7d99e91ab84..158950243d83 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -640,8 +640,7 @@ static ssize_t dsb_mode_store(struct device *dev, struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent); unsigned long val; - if ((kstrtoul(buf, 0, &val)) || (val < 0) || - (val & ~TPDM_DSB_MODE_MASK)) + if ((kstrtoul(buf, 0, &val)) || (val & ~TPDM_DSB_MODE_MASK)) return -EINVAL; spin_lock(&drvdata->spinlock);
dsb_mode_store() warn: unsigned 'val' is never less than zero. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202410150702.UaZ7kvet-lkp@intel.com/ Fixes: 018e43ad1eee ("coresight-tpdm: Add node to set dsb programming mode") Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn> --- drivers/hwtracing/coresight/coresight-tpdm.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)