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| author |   Per Forlin <per.forlin@linaro.org> | 2011-08-29 15:35:58 +0200 |
|---|---|---|
| committer |   Chris Ball <cjb@laptop.org> | 2011-10-26 16:32:04 -0400 |
| commit | 7c8a2829c22a270acadc6aa3a937e2e7956b19f5 (patch) | |
| tree | b787b429a1bd01f364e752fe5b52e2f95cb46875 /drivers/mmc/core | |
| parent | mmc: core: Set correct bus mode before card init (diff) | |
| download | linux-dev-7c8a2829c22a270acadc6aa3a937e2e7956b19f5.tar.xz linux-dev-7c8a2829c22a270acadc6aa3a937e2e7956b19f5.zip | |
mmc: core: clarify how to use post_req in case of errors
The err condition in post_req() is set to undo a call made to pre_req()
that hasn't been started yet. The err condition is not set if an MMC
request returns an error.
Signed-off-by: Per Forlin <per.forlin@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 45ea968e7dd1..0b4c2ed22bce 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -320,8 +320,14 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host, mmc_wait_for_req_done(host, host->areq->mrq); err = host->areq->err_check(host->card, host->areq); if (err) { + /* post process the completed failed request */ mmc_post_req(host, host->areq->mrq, 0); if (areq) + /* + * Cancel the new prepared request, because + * it can't run until the failed + * request has been properly handled. + */ mmc_post_req(host, areq->mrq, -EINVAL); host->areq = NULL; |