[PATCH] PCI: imx6:don't sleep in atomic context

From: Sanjeev Sharma
Date: Mon Nov 09 2015 - 05:49:40 EST

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

Signed-off-by: Sanjeev Sharma <sanjeev_sharma@xxxxxxxxxx>
Signed-off-by: David Mueller <dave.mueller@xxxxxx>
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);
* From L0, initiate MAC entry to gen2 if EP/RC supports gen2.

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