This is a note to let you know that I've just added the patch titled
ata: libahci: properly propagate return value of platform_get_irq()
to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: ata-libahci-properly-propagate-return-value-of-platform_get_irq.patch and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Tue Apr 10 13:58:07 CEST 2018
From: Thomas Petazzoni thomas.petazzoni@free-electrons.com Date: Tue, 16 May 2017 14:06:12 +0200 Subject: ata: libahci: properly propagate return value of platform_get_irq()
From: Thomas Petazzoni thomas.petazzoni@free-electrons.com
[ Upstream commit c034640a32f8456018d9c8c83799ead683046b95 ]
When platform_get_irq() fails, it returns an error code, which libahci_platform and replaces it by -EINVAL. This commit fixes that by propagating the error code. It fixes the situation where platform_get_irq() returns -EPROBE_DEFER because the interrupt controller is not available yet, and generally looks like the right thing to do.
We pay attention to not show the "no irq" message when we are in an EPROBE_DEFER situation, because the driver probing will be retried later on, once the interrupt controller becomes available to provide the interrupt.
Signed-off-by: Thomas Petazzoni thomas.petazzoni@free-electrons.com Reviewed-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Tejun Heo tj@kernel.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/ata/libahci_platform.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/ata/libahci_platform.c +++ b/drivers/ata/libahci_platform.c @@ -419,8 +419,9 @@ int ahci_platform_init_host(struct platf
irq = platform_get_irq(pdev, 0); if (irq <= 0) { - dev_err(dev, "no irq\n"); - return -EINVAL; + if (irq != -EPROBE_DEFER) + dev_err(dev, "no irq\n"); + return irq; }
/* prepare host */
Patches currently in stable-queue which might be from thomas.petazzoni@free-electrons.com are
queue-3.18/ata-libahci-properly-propagate-return-value-of-platform_get_irq.patch