diff options
| author | Jarkko Lavinen <jarkko.lavinen@nokia.com> | 2009-09-23 03:44:46 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 18:39:34 +0400 |
| commit | a3f406f861456987c9fce8cfa0a00d07b16cdec0 (patch) | |
| tree | 8ad5589b8a4aa5c4cdd95dcdeae0323cbee143aa /drivers/mmc | |
| parent | a6b2240da2b090874095832afc7eb9ed2968b27f (diff) | |
| download | linux-a3f406f861456987c9fce8cfa0a00d07b16cdec0.tar.xz | |
omap_hsmmc: fix scatter-gather list sanity checking
Do not use host->dma_len when it is uninitialzed. Finish the request with
an error if the mmc_omap_prepare_data() fails.
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: Matt Fleming <matt@console-pimps.org>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Denis Karpov <ext-denis.2.karpov@nokia.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Philip Langdale <philipl@overt.org>
Cc: "Madhusudhan" <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>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 9599dd126ac8..f588deff8b2c 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -878,7 +878,7 @@ mmc_omap_start_dma_transfer(struct mmc_omap_host *host, struct mmc_request *req) struct mmc_data *data = req->data; /* Sanity check: all the SG entries must be aligned by block size. */ - for (i = 0; i < host->dma_len; i++) { + for (i = 0; i < data->sg_len; i++) { struct scatterlist *sgl; sgl = data->sg + i; @@ -1021,10 +1021,20 @@ static int omap_mmc_disable(struct mmc_host *mmc, int lazy) static void omap_mmc_request(struct mmc_host *mmc, struct mmc_request *req) { struct mmc_omap_host *host = mmc_priv(mmc); + int err; WARN_ON(host->mrq != NULL); host->mrq = req; - mmc_omap_prepare_data(host, req); + err = mmc_omap_prepare_data(host, req); + if (err) { + req->cmd->error = err; + if (req->data) + req->data->error = err; + host->mrq = NULL; + mmc_request_done(mmc, req); + return; + } + mmc_omap_start_command(host, req->cmd, req->data); } |