sata_mv Clear queue indexes on chip restart.
Force in/out queue pointer indexes back to zero on any (re)init.
This ensures things are in a consistent state after any chip/dev errors.
Signed-off-by: Mark Lord <[EMAIL PROTECTED]>
--- old/drivers/ata/sata_mv.c 2008-01-24 11:17:42.000000000 -0500
+++ new/drivers/ata/sata_mv.c 2008-01-24 11:23:05.000000000 -0500
@@ -792,7 +792,7 @@
/*
* initialize request queue
*/
- index = (pp->req_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_REQ_Q_PTR_SHIFT;
+ index = pp->req_idx = 0;
WARN_ON(pp->crqb_dma & 0x3ff);
writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
@@ -808,7 +808,7 @@
/*
* initialize response queue
*/
- index = (pp->resp_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_RSP_Q_PTR_SHIFT;
+ index = pp->resp_idx = 0;
WARN_ON(pp->crpb_dma & 0xff);
writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
-
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