diff options
| author | Hsin-Yi Wang <hsinyi@chromium.org> | 2021-04-20 21:30:50 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 13:50:59 +0200 |
| commit | 2962484dfef8dbb7f9059822bc26ce8a04d0e47c (patch) | |
| tree | 4078ab7c8948253b0ac45866495e5a2b85997b9a /drivers | |
| parent | 0b0226be3a52dadd965644bc52a807961c2c26df (diff) | |
| download | linux-2962484dfef8dbb7f9059822bc26ce8a04d0e47c.tar.bz2 | |
misc: eeprom: at24: check suspend status before disable regulator
cd5676db0574 ("misc: eeprom: at24: support pm_runtime control") disables
regulator in runtime suspend. If runtime suspend is called before
regulator disable, it will results in regulator unbalanced disabling.
Fixes: cd5676db0574 ("misc: eeprom: at24: support pm_runtime control")
Cc: stable <stable@vger.kernel.org>
Acked-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Link: https://lore.kernel.org/r/20210420133050.377209-1-hsinyi@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/eeprom/at24.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 926408b41270..7a6f01ace78a 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -763,7 +763,8 @@ static int at24_probe(struct i2c_client *client) at24->nvmem = devm_nvmem_register(dev, &nvmem_config); if (IS_ERR(at24->nvmem)) { pm_runtime_disable(dev); - regulator_disable(at24->vcc_reg); + if (!pm_runtime_status_suspended(dev)) + regulator_disable(at24->vcc_reg); return PTR_ERR(at24->nvmem); } @@ -774,7 +775,8 @@ static int at24_probe(struct i2c_client *client) err = at24_read(at24, 0, &test_byte, 1); if (err) { pm_runtime_disable(dev); - regulator_disable(at24->vcc_reg); + if (!pm_runtime_status_suspended(dev)) + regulator_disable(at24->vcc_reg); return -ENODEV; } |