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| author | Stephen Hemminger <stephen@networkplumber.org> | 2015-05-14 18:19:13 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-24 20:55:15 +0200 |
| commit | 9ff2c132345cab8972a2bd29069aa52a3cadbbcc (patch) | |
| tree | 0c4711947fd75fdaf88df0aef5b85ca23d453496 /drivers/uio/uio.c | |
| parent | mei: export hbm features to debugfs under devstate (diff) | |
| download | linux-9ff2c132345cab8972a2bd29069aa52a3cadbbcc.tar.xz linux-9ff2c132345cab8972a2bd29069aa52a3cadbbcc.zip | |
uio: don't free irq that was not requested
UIO base driver should only free_irq that it has requested.
UIO supports drivers without interrupts (irq == 0) or custom handlers.
This fixes warnings like:
WARNING: CPU: 1 PID: 5478 at kernel/irq/manage.c:1244 __free_irq+0xa9/0x1e0()
Trying to free already-free IRQ 0
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/uio/uio.c')
| -rw-r--r-- | drivers/uio/uio.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 65bf0676d54a..3257d4220d01 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -879,7 +879,8 @@ void uio_unregister_device(struct uio_info *info) uio_dev_del_attributes(idev); - free_irq(idev->info->irq, idev); + if (info->irq && info->irq != UIO_IRQ_CUSTOM) + free_irq(info->irq, idev); device_destroy(&uio_class, MKDEV(uio_major, idev->minor)); |