diff options
| author | Colin Ian King <colin.king@canonical.com> | 2020-01-07 12:39:01 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-08 17:34:18 +0100 |
| commit | ba9b40810bb43e6bf73b395012b98633c03f7f59 (patch) | |
| tree | 0a7bb16dcb13807be03313796e43eac16d61dc88 /drivers/usb/host | |
| parent | 96a0c12843109e5c4d5eb1e09d915fdd0ce31d25 (diff) | |
| download | linux-ba9b40810bb43e6bf73b395012b98633c03f7f59.tar.gz linux-ba9b40810bb43e6bf73b395012b98633c03f7f59.tar.bz2 linux-ba9b40810bb43e6bf73b395012b98633c03f7f59.zip | |
usb: ohci-da8xx: ensure error return on variable error is set
Currently when an error occurs when calling devm_gpiod_get_optional or
calling gpiod_to_irq it causes an uninitialized error return in variable
'error' to be returned. Fix this by ensuring the error variable is set
from da8xx_ohci->oc_gpio and oc_irq.
Thanks to Dan Carpenter for spotting the uninitialized error in the
gpiod_to_irq failure case.
Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: d193abf1c913 ("usb: ohci-da8xx: add vbus and overcurrent gpios")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20200107123901.101190-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ohci-da8xx.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c index 38183ac438c6..1371b0c249ec 100644 --- a/drivers/usb/host/ohci-da8xx.c +++ b/drivers/usb/host/ohci-da8xx.c @@ -415,13 +415,17 @@ static int ohci_da8xx_probe(struct platform_device *pdev) } da8xx_ohci->oc_gpio = devm_gpiod_get_optional(dev, "oc", GPIOD_IN); - if (IS_ERR(da8xx_ohci->oc_gpio)) + if (IS_ERR(da8xx_ohci->oc_gpio)) { + error = PTR_ERR(da8xx_ohci->oc_gpio); goto err; + } if (da8xx_ohci->oc_gpio) { oc_irq = gpiod_to_irq(da8xx_ohci->oc_gpio); - if (oc_irq < 0) + if (oc_irq < 0) { + error = oc_irq; goto err; + } error = devm_request_threaded_irq(dev, oc_irq, NULL, ohci_da8xx_oc_thread, IRQF_TRIGGER_RISING | |