AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

pwm: Fixes for v3.17-rc2

Browse Source 
Just one bugfix for the PWM lookup table code that would cause a PWM
 channel to be set to the wrong period and polarity for non-perfect
 matches.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABAgAGBQJT8cLVAAoJEN0jrNd/PrOhRiQP/10av7t2Ahdn3Qi2imz5j3UO
 lA73tzU36MEchsNoDkYnLwZik6x/3GYk7QUkPoyMFYcay1Wu/USj5hTuZl2phOtF
 9tdqkKosrV7APJfpzfuoj6W2FtKBIV4iaxez+ZrqXXKj4BdKXGFvv72w4xf/EWE9
 aPabqg3lvorZY42adqbqH5kbATd61FJPZktwzKfmg7O01Wnp2GL3xCPApq9CsBEQ
 c7i9TR1ttEQZNM6RRs7auwgRNgbuxFZkXRSP5VFbFb1TB3OMCDcGY+PXab42SYLR
 ztlUao93jZP9Dz7abIGHcZDgRpj7i6veu09RAH6C1Lr0ovvcTor69LlsgvaWQKKb
 8CMiKGpLVF3Sg3wLwrSRgUb7FMNVc/R1lR//BtMMTxFcVNTvxc18Tl41azx3kZEt
 UobQ3IzpalOlJTj1ADzUwws9alcgnD5hD6SEQJwwuqEzJTB4FeTepnrr4VgAA1oM
 HU8+TzSdZLV0lDIl43rKj0kZ93ds3i2lM/FU6e0Z4bZT1K53J9a4iQsKJIFy83An
 bcT0lr1kgBTHoBvSnCLsSB6ZmWZ3rmnQ6kIWv/nfzcQKQdNLMpyEbb1xComM/SOI
 VjaIf/OaTa9h1QswSS2kYZpOguNiQkzRQtDsH4Pr0UgG7g7A5kofjsaP1VZRjcCq
 FEFj0Zi+aHYX/UKDNa72
 =SmTb
 -----END PGP SIGNATURE-----

Merge tag 'pwm/for-3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm fix from Thierry Reding:
 "Just one bugfix for the PWM lookup table code that would cause a PWM
  channel to be set to the wrong period and polarity for non-perfect
  matches"

* tag 'pwm/for-3.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: Fix period and polarity in pwm_get() for non-perfect matches
This commit is contained in:
Linus Torvalds 2014-08-22 14:50:21 -07:00
commit 451fd72219
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/pwm/core.c
View File

@ -606,6 +606,8 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id)
unsigned int best = 0;
struct pwm_lookup *p;
unsigned int match;
unsigned int period;
enum pwm_polarity polarity;
/* look up via DT first */
if (IS_ENABLED(CONFIG_OF) && dev && dev->of_node)
@ -653,6 +655,8 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id)
if (match > best) {
chip = pwmchip_find_by_name(p->provider);
index = p->index;
period = p->period;
polarity = p->polarity;
if (match != 3)
best = match;
@ -668,8 +672,8 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id)
if (IS_ERR(pwm))
return pwm;
pwm_set_period(pwm, p->period);
pwm_set_polarity(pwm, p->polarity);
pwm_set_period(pwm, period);
pwm_set_polarity(pwm, polarity);
return pwm;