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Date: Tue, 4 Feb 2014 13:10:51 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Aaro Koskinen <aaro.koskinen@....com> Subject: [PATCH 3.13 064/140] uio: fix devm_request_irq usage 3.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Aaro Koskinen <aaro.koskinen@....com> commit 632fefaf1fff7c344191c363e08a43cf006fe60e upstream. Commit e6789cd3dfb553077606ccafeb05e0043f072481 (uio: Simplify uio error path by using devres functions) converted uio to use devm_request_irq(). This introduced a change in behaviour since the IRQ is associated with the parent device instead of the created UIO device. The IRQ will remain active after uio_unregister_device() is called, and some drivers will crash because of this. The patch fixes this. Signed-off-by: Aaro Koskinen <aaro.koskinen@....com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/uio/uio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -847,7 +847,7 @@ int __uio_register_device(struct module info->uio_dev = idev; if (info->irq && (info->irq != UIO_IRQ_CUSTOM)) { - ret = devm_request_irq(parent, info->irq, uio_interrupt, + ret = devm_request_irq(idev->dev, info->irq, uio_interrupt, info->irq_flags, info->name, idev); if (ret) goto err_request_irq; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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