Re: [PATCH V2] mfd: rtsx: release IRQ during shutdown

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, 03 Jan 2018, Sinan Kaya wrote:

> 'Commit cc27b735ad3a ("PCI/portdrv: Turn off PCIe services during
> shutdown")' revealed a resource leak in rtsx_pci driver during shutdown.
> 
> Issue shows up as a warning during shutdown as follows:
> 
> remove_proc_entry: removing non-empty directory 'irq/17', leaking at least
> 'rtsx_pci'
> WARNING: CPU: 0 PID: 1578 at fs/proc/generic.c:572
> remove_proc_entry+0x11d/0x130
> Modules linked in <long list but none that are out-of-tree>
> ...
> Call Trace:
> unregister_irq_proc
> free_desc
> irq_free_descs
> mp_unmap_irq
> acpi_unregister_gsi_apic
> acpi_pci_irq_disable
> do_pci_disable_device
> pci_disable_device
> device_shutdown
> kernel_restart
> Sys_reboot
> 
> Even though rtsx_pci driver implements a shutdown callback, it is not
> releasing the interrupt that it registered during probe. This is causing
> the ACPI layer to complain that the shared IRQ is in use while freeing
> IRQ.
> 
> This code releases the IRQ to prevent resource leak and eliminate the
> warning.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=198141
> Reported-by: Chris Clayton <chris2553@xxxxxxxxxxxxxx>
> Fixes: cc27b735ad3a ("PCI/portdrv: Turn off PCIe services during shutdown")
> Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx>
> ---
>  drivers/mfd/rtsx_pcr.c | 3 +++
>  1 file changed, 3 insertions(+)

Applied, thanks.

-- 
Lee Jones
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux IBM ACPI]     [Linux Power Management]     [Linux Kernel]     [Linux Laptop]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux