diff options
| author | Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2020-02-13 16:15:03 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2020-03-10 10:33:52 +0100 |
| commit | 9be8bc4dd6177cf992b93b0bd014c4f611283896 (patch) | |
| tree | 4944934e47fbebf82864a29c6571a6105be31810 /drivers/i2c | |
| parent | i2c: i801: Do not add ICH_RES_IO_SMI for the iTCO_wdt device (diff) | |
| download | linux-9be8bc4dd6177cf992b93b0bd014c4f611283896.tar.xz linux-9be8bc4dd6177cf992b93b0bd014c4f611283896.zip | |
i2c: designware-pci: Fix BUG_ON during device removal
Function i2c_dw_pci_remove() -> pci_free_irq_vectors() ->
pci_disable_msi() -> free_msi_irqs() will throw a BUG_ON() for MSI
enabled device since the driver has not released the requested IRQ before
calling the pci_free_irq_vectors().
Here driver requests an IRQ using devm_request_irq() but automatic
release happens only after remove callback. Fix this by explicitly
freeing the IRQ before calling pci_free_irq_vectors().
Fixes: 21aa3983d619 ("i2c: designware-pci: Switch over to MSI interrupts")
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-pcidrv.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c index 050adda7c1bd..05b35ac33ce3 100644 --- a/drivers/i2c/busses/i2c-designware-pcidrv.c +++ b/drivers/i2c/busses/i2c-designware-pcidrv.c @@ -313,6 +313,7 @@ static void i2c_dw_pci_remove(struct pci_dev *pdev) pm_runtime_get_noresume(&pdev->dev); i2c_del_adapter(&dev->adapter); + devm_free_irq(&pdev->dev, dev->irq, dev); pci_free_irq_vectors(pdev); } |