Revision d717ea73e36dd5659640fae82605ad85c4117f4d authored by Geert Uytterhoeven on 13 August 2014, 15:18:53 UTC, committed by Thierry Reding on 18 August 2014, 08:58:43 UTC
If pwm_get() finds a look-up entry with a perfect match (both dev_id and con_id match), the loop is aborted, and "p" still points to the correct struct pwm_lookup. If only an entry with a matching dev_id or con_id is found, the loop terminates after traversing the whole list, and "p" now points to arbitrary memory, not part of the pwm_lookup list. Then pwm_set_period() and pwm_set_polarity() will set random values for period resp. polarity. To fix this, save period and polarity when finding a new best match, just like is done for chip (for the provider) and index. This fixes the LCD backlight on r8a7740/armadillo-legacy, which was fed period 0 and polarity -1068821144 instead of 33333 resp. 1. Fixes: 3796ce1d4d4b ("pwm: add period and polarity to struct pwm_lookup") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: stable@vger.kernel.org Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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File | Mode | Size |
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include | ||
ss | ||
.gitignore | -rw-r--r-- | 25 bytes |
Kconfig | -rw-r--r-- | 5.1 KB |
Makefile | -rw-r--r-- | 846 bytes |
avc.c | -rw-r--r-- | 19.8 KB |
exports.c | -rw-r--r-- | 709 bytes |
hooks.c | -rw-r--r-- | 151.6 KB |
netif.c | -rw-r--r-- | 6.8 KB |
netlabel.c | -rw-r--r-- | 12.9 KB |
netlink.c | -rw-r--r-- | 2.4 KB |
netnode.c | -rw-r--r-- | 7.9 KB |
netport.c | -rw-r--r-- | 6.3 KB |
nlmsgtab.c | -rw-r--r-- | 6.5 KB |
selinuxfs.c | -rw-r--r-- | 43.0 KB |
xfrm.c | -rw-r--r-- | 11.2 KB |
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