omap hsmmc: fix processing of all dma interrupts as block completion

If other informative interrupts are enabled for the DMA channel used by
hsmmc, those are incorrectly treated as block completion.  This patch lets
only the block completion interrupt to be processed.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index ee1a309..dc57ef6 100644 (file)
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1273,8 +1273,11 @@ static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data)
        struct mmc_data *data = host->mrq->data;
        int dma_ch, req_in_progress;
 
-       if (ch_status & OMAP2_DMA_MISALIGNED_ERR_IRQ)
-               dev_dbg(mmc_dev(host->mmc), "MISALIGNED_ADRS_ERR\n");
+       if (!(ch_status & OMAP_DMA_BLOCK_IRQ)) {
+               dev_warn(mmc_dev(host->mmc), "unexpected dma status %x\n",
+                       ch_status);
+               return;
+       }
 
        spin_lock(&host->irq_lock);
        if (host->dma_ch < 0) {