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authorDan Carpenter <dan.carpenter@oracle.com>2013-09-04 12:31:36 +0300
committerAlex Deucher <alexander.deucher@amd.com>2013-09-11 11:44:27 -0400
commit8c5c6fad61f9540a977e5731a8ae3bd8ba9083cb (patch)
treebadcd9d2600c330c1ca93238511175106c116c53 /arch
parent41cd0b3b78d83ae87ee71cca2de5498f93816763 (diff)
downloadlinux-8c5c6fad61f9540a977e5731a8ae3bd8ba9083cb.tar.gz
drm/radeon: signedness bug in kv_dpm.c
The problem here is that "unsigned i" is always greater than or equal to
zero.  These loops mostly have a second check for "(i == 0)" so only the
last two are actually buggy.  The rest is just cleanup.

Bug 1:  kv_force_dpm_highest() doesn't have an "(i == 0)" check so it's
a potential forever loop.

Bug 2: In kv_get_sleep_divider_id_from_clock() there is a typo and the
test is reversed "<=" vs ">" so we never enter the loop.  That means
normally we return KV_MAX_DEEPSLEEP_DIVIDER_ID (5).  The return value
from here is saved in ->DeepSleepDivId and I wasn't able to determine
how that is used.  This is a static checker fix and I have not tested
it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'arch')
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