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| author | Lothar Waßmann <LW@KARO-electronics.de> | 2014-08-20 08:38:36 +0200 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2014-08-20 13:23:00 +0100 |
| commit | 937222c4dda495277a8dfbc18bf7e54fe670105c (patch) | |
| tree | 41fd4cc338bd4dd3136237df05e7414146c50516 /REPORTING-BUGS | |
| parent | 7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 (diff) | |
| download | talos-obmc-linux-937222c4dda495277a8dfbc18bf7e54fe670105c.tar.gz talos-obmc-linux-937222c4dda495277a8dfbc18bf7e54fe670105c.zip | |
pwm-backlight: Fix bogus request for GPIO#0 when instantiated from DT
commit 257462dbf3ed ("pwm-backlight: switch to gpiod interface")
introduced a regression leading to acquiring a bogus GPIO-0 when
configured from DT without an 'enable-gpios' property.
The driver will happily accept the 0 initialized 'enable_gpio' member
of the struct platform_pwm_backlight_data as valid gpio number, and
request this GPIO as enable pin. In case of multiple driver instances,
the second will fail to register with the error message:
pwm-backlight backlight1.23: failed to request GPIO#0: -16
Fix this by setting enable_gpio in the pdata struct to -EINVAL.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'REPORTING-BUGS')
0 files changed, 0 insertions, 0 deletions
