On 10/23/2012 11:17 AM, Borislav Petkov wrote:
---
diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c
index 09723b76beac..80d594d6e7c8 100644
--- a/drivers/ata/pata_acpi.c
+++ b/drivers/ata/pata_acpi.c
@@ -144,6 +144,13 @@ static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev)
/* Now stuff the nS values into the structure */
t = ata_timing_find_mode(adev->dma_mode);
+ if (!t) {
+ pr_err("%s: ata_timing_find_mode gives NULL; adev->dma_mode: 0x%x\n",
+ __func__, adev->dma_mode);
+
+ return;
+ }
+
if (adev->dma_mode >= XFER_UDMA_0) {
acpi->gtm.drive[unit].dma = t->udma;
acpi->gtm.flags |= (1 << (2 * unit));
--
pacpi_set_dmamode: ata_timing_find_mode gives NULL; adev->dma_mode: 0x0
as well here if I build pata_acpi as a module, if I build it into the
kernel I don't get any message.
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