diff options
| author | Per Forlin <per.forlin@linaro.org> | 2011-08-29 15:35:58 +0200 |
|---|---|---|
| committer | Ulf HANSSON <ulf.hansson@stericsson.com> | 2011-10-10 12:18:19 +0200 |
| commit | a36ce8817ea0748a691c83529ac36913fbb8587d (patch) | |
| tree | ef7fed54ef98e5046f33d19e926e85ab148bc579 /drivers/mmc | |
| parent | f503d030be0747c6fa739cf146ec34154c32cbbb (diff) | |
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>
Change-Id: Ie91c9868301c654ae27937b666089d82017b75f2
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/33433
Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com>
Tested-by: Ulf HANSSON <ulf.hansson@stericsson.com>
Diffstat (limited to 'drivers/mmc')
| -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 e473446073e..ddcfae84fe8 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -319,8 +319,14 @@ 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; |