FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-02 20:59:30 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

i2c: designware-pci: Fix BUG_ON during device removal

Browse Source 
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: 21aa3983d6 ("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>
This commit is contained in:
Jarkko Nikula 2020-02-13 17:15:03 +02:00 committed by Wolfram Sang
parent 04bbb97d1b
commit 9be8bc4dd6
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/i2c/busses/i2c-designware-pcidrv.c
View File

@ -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);
}