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| author | Peng Wu <wupeng58@huawei.com> | 2022-09-13 07:16:59 +0000 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2022-09-28 16:17:41 +0100 |
| commit | 9c90f21f93e4b9c8c9a799ca7c09b1323b9fca11 (patch) | |
| tree | 2a62c7912b175a1c5ce4f3935d98c30a8b5bcfbd /drivers | |
| parent | a328ae8504dbc55f92be0e781aac301a23b5c21e (diff) | |
| download | linux-stable-9c90f21f93e4b9c8c9a799ca7c09b1323b9fca11.tar.gz linux-stable-9c90f21f93e4b9c8c9a799ca7c09b1323b9fca11.tar.bz2 linux-stable-9c90f21f93e4b9c8c9a799ca7c09b1323b9fca11.zip | |
mfd: htc-i2cpld: Fix an IS_ERR() vs NULL bug in htcpld_core_probe()
The gpiochip_request_own_desc() function returns error pointers on error,
it doesn't return NULL.
Fixes: 0ef5164a81fbf ("mfd/omap1: htc-i2cpld: Convert to a pure GPIO driver")
Signed-off-by: Peng Wu <wupeng58@huawei.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20220913071659.94677-1-wupeng58@huawei.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mfd/htc-i2cpld.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/mfd/htc-i2cpld.c b/drivers/mfd/htc-i2cpld.c index 97d47715aa97..b45b1346ab54 100644 --- a/drivers/mfd/htc-i2cpld.c +++ b/drivers/mfd/htc-i2cpld.c @@ -567,23 +567,26 @@ static int htcpld_core_probe(struct platform_device *pdev) htcpld->int_reset_gpio_hi = gpiochip_request_own_desc(&htcpld->chip[2].chip_out, 7, "htcpld-core", GPIO_ACTIVE_HIGH, GPIOD_OUT_HIGH); - if (!htcpld->int_reset_gpio_hi) + if (IS_ERR(htcpld->int_reset_gpio_hi)) { /* * If it failed, that sucks, but we can probably * continue on without it. */ + htcpld->int_reset_gpio_hi = NULL; dev_warn(dev, "Unable to request int_reset_gpio_hi -- interrupts may not work\n"); - + } htcpld->int_reset_gpio_lo = gpiochip_request_own_desc(&htcpld->chip[2].chip_out, 0, "htcpld-core", GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW); - if (!htcpld->int_reset_gpio_lo) + if (IS_ERR(htcpld->int_reset_gpio_lo)) { /* * If it failed, that sucks, but we can probably * continue on without it. */ + htcpld->int_reset_gpio_lo = NULL; dev_warn(dev, "Unable to request int_reset_gpio_lo -- interrupts may not work\n"); + } dev_info(dev, "Initialized successfully\n"); return 0; |