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Message-ID: <1447066080-5859-1-git-send-email-sanjeev_sharma@mentor.com> Date: Mon, 9 Nov 2015 16:18:00 +0530 From: Sanjeev Sharma <sanjeev_sharma@...tor.com> To: <Richard.Zhu@...escale.com>, <l.stach@...gutronix.de>, <bhelgaas@...gle.com> CC: <linux-pci@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, Sanjeev Sharma <sanjeev_sharma@...tor.com>, David Mueller <dave.mueller@....ch> Subject: [PATCH] PCI: imx6:don't sleep in atomic context 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@...tor.com> Signed-off-by: David Mueller <dave.mueller@....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); } /* * From L0, initiate MAC entry to gen2 if EP/RC supports gen2. -- 1.7.11.7 -- 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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