Re: [PATCH 1/2] ahci: Check and set 64-bit DMA mask for platform AHCI driver
From: Suravee Suthikulanit
Date: Fri Jun 13 2014 - 08:45:38 EST
On 6/12/2014 12:47 PM, Sergei Shtylyov wrote:
diff --git a/drivers/ata/libahci_platform.c
b/drivers/ata/libahci_platform.c
index 3a5b4ed..a958a2b 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -364,6 +364,19 @@ int ahci_platform_init_host(struct
platform_device *pdev,
ap->ops = &ata_dummy_port_ops;
}
+ if (hpriv->cap & HOST_CAP_64) {
+ rc = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
+ if (rc) {
+ rc = dma_coerce_mask_and_coherent(dev,
+ DMA_BIT_MASK(32));
+ if (rc) {
+ dev_err(dev, "Failed to enable 64-bit DMA.\n");
Not 32-bit?
Actually, I intended to say 64 since this is supposed to be setting up
64-bit DMA mask. Or we could just say failed to set up DMA mask.
Suravee
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