From f118ae5901172dacc4f272acf5eccfba06e8d221 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 23 Jun 2014 12:59:08 +0100 Subject: [PATCH] ata: ahci_imx: warn when disabling ahci link When the AHCI link is disabled, it can't be re-enabled except by resetting the entire SoC. Rather than doing this silently print some kernel messages to inform the user, along with how to avoid this. tj: Put a long printf format string on a single line. Signed-off-by: Russell King Signed-off-by: Tejun Heo --- drivers/ata/ahci_imx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/ata/ahci_imx.c b/drivers/ata/ahci_imx.c index 4384a7d72133..cac4360f272a 100644 --- a/drivers/ata/ahci_imx.c +++ b/drivers/ata/ahci_imx.c @@ -326,6 +326,9 @@ static void ahci_imx_error_handler(struct ata_port *ap) writel(reg_val | IMX_P0PHYCR_TEST_PDDQ, mmio + IMX_P0PHYCR); imx_sata_disable(hpriv); imxpriv->no_device = true; + + dev_info(ap->dev, "no device found, disabling link.\n"); + dev_info(ap->dev, "pass " MODULE_PARAM_PREFIX ".hotplug=1 to enable hotplug\n"); } static int ahci_imx_softreset(struct ata_link *link, unsigned int *class, -- 2.20.1