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authorPierre Ossman <drzeus@drzeus.cx>2007-08-12 13:13:24 +0200
committerPierre Ossman <drzeus@drzeus.cx>2007-08-23 06:27:44 +0200
commit2b061973404802fb87db93175b856ee0dfbe38e4 (patch)
tree9d44303c71725ec80da3b90c2e33f0fc8d22741b /drivers/mmc
parentbe760a9de881d84994403bb93177bcb95319c4cb (diff)
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sdhci: be more cautious about block count register
The block count register shouldn't be trusted for single block transfers, so avoid using it completely when calculating transferred bytes. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index f2bc87a..7181e86 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -477,8 +477,8 @@ static void sdhci_finish_data(struct sdhci_host *host)
/*
* Controller doesn't count down when in single block mode.
*/
- if ((data->blocks == 1) && (data->error == MMC_ERR_NONE))
- blocks = 0;
+ if (data->blocks == 1)
+ blocks = (data->error == MMC_ERR_NONE) ? 0 : 1;
else
blocks = readw(host->ioaddr + SDHCI_BLOCK_COUNT);
data->bytes_xfered = data->blksz * (data->blocks - blocks);