diff options
| author | Lokesh Vutla <lokeshvutla@ti.com> | 2020-10-30 16:41:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-30 13:26:05 +0300 |
| commit | 5992bce16a64662bb138237889201c30901c2dcf (patch) | |
| tree | 1095101bea6a8fcdbcb01cfa6b136eb6a5265875 /drivers/pwm | |
| parent | 550a7b7bba74f6a03f84e74c158bc0c72dd90eb6 (diff) | |
| download | linux-5992bce16a64662bb138237889201c30901c2dcf.tar.xz | |
pwm: lp3943: Dynamically allocate PWM chip base
[ Upstream commit 1f0f1e80fdd3aa9631f6c22cda4f8550cfcfcc3e ]
When there are other PWM controllers enabled along with pwm-lp3943,
pwm-lp3942 is failing to probe with -EEXIST error. This is because
other PWM controllers are probed first and assigned PWM base 0 and
pwm-lp3943 is requesting for 0 again.
In order to avoid this, assign the chip base with -1, so that it is
dynamically allocated.
Fixes: af66b3c0934e ("pwm: Add LP3943 PWM driver")
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Uwe Kleine-König <u.kleine-könig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-lp3943.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-lp3943.c b/drivers/pwm/pwm-lp3943.c index 15b40a8bc4fb..5055ba2c6c94 100644 --- a/drivers/pwm/pwm-lp3943.c +++ b/drivers/pwm/pwm-lp3943.c @@ -278,6 +278,7 @@ static int lp3943_pwm_probe(struct platform_device *pdev) lp3943_pwm->chip.dev = &pdev->dev; lp3943_pwm->chip.ops = &lp3943_pwm_ops; lp3943_pwm->chip.npwm = LP3943_NUM_PWMS; + lp3943_pwm->chip.base = -1; platform_set_drvdata(pdev, lp3943_pwm); |