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| author | Lokesh Vutla <lokeshvutla@ti.com> | 2020-10-30 19:11:35 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-29 13:47:03 +0100 |
| commit | e514cfc38f53a2c72940999d1e8ef1d002e6dfed (patch) | |
| tree | f26686969b0732497d91a4730c33c6acd75918fc | |
| parent | 1bac99796304584cf17766323c3b52c091fe46fb (diff) | |
| download | linux-stable-e514cfc38f53a2c72940999d1e8ef1d002e6dfed.tar.gz linux-stable-e514cfc38f53a2c72940999d1e8ef1d002e6dfed.tar.bz2 linux-stable-e514cfc38f53a2c72940999d1e8ef1d002e6dfed.zip | |
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>
| -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 52584e9962ed..fc446d5c19f9 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); |