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| author | Sergey Shtylyov <s.shtylyov@omp.ru> | 2021-08-09 23:50:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-13 13:05:50 +0200 |
| commit | ecc2f30dbb25969908115c81ec23650ed982b004 (patch) | |
| tree | e74efc3ed1efd9af38b48620febae9d6ae1f00c5 | |
| parent | 711087f342914e831269438ff42cf59bb0142c71 (diff) | |
| download | linux-ecc2f30dbb25969908115c81ec23650ed982b004.tar.gz linux-ecc2f30dbb25969908115c81ec23650ed982b004.tar.bz2 linux-ecc2f30dbb25969908115c81ec23650ed982b004.zip | |
usb: phy: fsl-usb: add IRQ check
The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to request_irq() (which takes
*unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original
error code. Stop calling request_irq() with the invalid IRQ #s.
Fixes: 0807c500a1a6 ("USB: add Freescale USB OTG Transceiver driver")
Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/b0a86089-8b8b-122e-fd6d-73e8c2304964@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/phy/phy-fsl-usb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c index f34c9437a182..972704262b02 100644 --- a/drivers/usb/phy/phy-fsl-usb.c +++ b/drivers/usb/phy/phy-fsl-usb.c @@ -873,6 +873,8 @@ int usb_otg_start(struct platform_device *pdev) /* request irq */ p_otg->irq = platform_get_irq(pdev, 0); + if (p_otg->irq < 0) + return p_otg->irq; status = request_irq(p_otg->irq, fsl_otg_isr, IRQF_SHARED, driver_name, p_otg); if (status) { |