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authorJaehoon Chung <jh80.chung@samsung.com>2012-01-11 13:28:21 +0400
committerChris Ball <cjb@laptop.org>2012-01-13 00:17:16 +0400
commit8234e86960b07f5a3cf9973de3f9ba9a50450464 (patch)
treeeea2ad109fe9d5cec12fd224e73973c49934fce3 /drivers/mmc
parent069c9f142822d552ec885572945d8bce9eff0519 (diff)
downloadlinux-8234e86960b07f5a3cf9973de3f9ba9a50450464.tar.xz
mmc: dw_mmc: miscaculated the fifo-depth with wrong bit operation
In FIFOTH register, the RX_WMark field (bits[27:16]) defaults to FIFO_DEPTH - 1. When reading it, bits[26:16] were being used, so fix it to use the mask 0xfff instead of 0x7ff. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/dw_mmc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 94e223825a45..0e342793ff14 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1949,7 +1949,7 @@ static int dw_mci_probe(struct platform_device *pdev)
* should put it in the platform data.
*/
fifo_size = mci_readl(host, FIFOTH);
- fifo_size = 1 + ((fifo_size >> 16) & 0x7ff);
+ fifo_size = 1 + ((fifo_size >> 16) & 0xfff);
} else {
fifo_size = host->pdata->fifo_depth;
}