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SubjectRe: [PATCH] PCI: imx6:don't sleep in atomic context
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Am Montag, den 09.11.2015, 16:18 +0530 schrieb Sanjeev Sharma:
> If additional PCIe switch get connected between the
> host and the NIC,the kernel crashes with "BUG:
> scheduling while atomic". To handle this we need to
> call mdelay() instead of usleep_range().
>
> For more detail please refer bugzilla.kernel.org, Bug
> 100031
>
> Signed-off-by: Sanjeev Sharma <sanjeev_sharma@mentor.com>

This is wrong. You are not the author of this patch and this should be
reflected both in the From: line as well as in the order of signoffs.

> Signed-off-by: David Mueller <dave.mueller@gmx.ch>
> ---
> drivers/pci/host/pci-imx6.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c
> index 233a196..9769b13 100644
> --- a/drivers/pci/host/pci-imx6.c
> +++ b/drivers/pci/host/pci-imx6.c
> @@ -499,7 +499,7 @@ static int imx6_pcie_link_up(struct pcie_port *pp)
> * Wait a little bit, then re-check if the link finished
> * the training.
> */
> - usleep_range(1000, 2000);
> + mdelay(1000);

A mdelay(1000) is a whole different timescale than a usleep(1000). If
this patch works for you with mdelay(1) or maybe mdelay(2) I would be
fine with it.

Regards,
Lucas

> }
> /*
> * From L0, initiate MAC entry to gen2 if EP/RC supports gen2.

--
Pengutronix e.K. | Lucas Stach |
Industrial Linux Solutions | http://www.pengutronix.de/ |



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