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| author | Yauhen Kharuzhy <jekhor@gmail.com> | 2009-02-11 13:25:52 -0800 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2009-02-18 20:56:04 +0100 |
| commit | 994244883739e4044bef76d4e5d7a9b66dc6c7b6 (patch) | |
| tree | e7e90dec7e5d20a362de132313b8e7c1c653e7cc /drivers/mmc | |
| parent | 86a6a8749d5b8fd5c2b544fe9fd11101e3d0550f (diff) | |
| download | blackbird-op-linux-994244883739e4044bef76d4e5d7a9b66dc6c7b6.tar.gz blackbird-op-linux-994244883739e4044bef76d4e5d7a9b66dc6c7b6.zip | |
s3cmci: Fix hangup in do_pio_write()
This commit fixes the regression what was added by commit
088a78af978d0c8e339071a9b2bca1f4cb368f30 "s3cmci: Support transfers
which are not multiple of 32 bits."
fifo_free() now returns amount of available space in FIFO buffer in
bytes. But do_pio_write() writes to FIFO 32-bit words. Condition for
return from cycle is (fifo_free() == 0), but when fifo has 1..3 bytes
of free space then this condition will never be true and system hangs.
This patch changes condition in the while() to (fifo_free() > 3).
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/s3cmci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c index 35a98eec7414..f4a67c65d301 100644 --- a/drivers/mmc/host/s3cmci.c +++ b/drivers/mmc/host/s3cmci.c @@ -329,7 +329,7 @@ static void do_pio_write(struct s3cmci_host *host) to_ptr = host->base + host->sdidata; - while ((fifo = fifo_free(host))) { + while ((fifo = fifo_free(host)) > 3) { if (!host->pio_bytes) { res = get_data_buffer(host, &host->pio_bytes, &host->pio_ptr); |
