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| author | Dmitry Shmidt <dimitrysh@google.com> | 2011-03-03 17:40:10 -0500 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-03-07 16:55:44 -0500 |
| commit | 34497913f2936fd43c86b007da7224bb8e77fd15 (patch) | |
| tree | 359c992cbe0bd6b29c2708cad3c5e76dd3d7beaf /drivers/mmc | |
| parent | 214d93b02c4fe93638ad268613c9702a81ed9192 (diff) | |
| download | linux-34497913f2936fd43c86b007da7224bb8e77fd15.tar.gz linux-34497913f2936fd43c86b007da7224bb8e77fd15.tar.bz2 linux-34497913f2936fd43c86b007da7224bb8e77fd15.zip | |
mmc: sdio: Allow sdio operations in other threads during sdio_add_func()
This fixes a bug introduced by 807e8e40673d ("mmc: Fix sd/sdio/mmc
initialization frequency retries") that prevented SDIO drivers from
performing SDIO commands in their probe routines -- the above patch
called mmc_claim_host() before sdio_add_func(), which causes a deadlock
if an external SDIO driver calls sdio_claim_host().
Fix tested on an OLPC XO-1.75 with libertas on SDIO.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Reviewed-and-Tested-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/sdio.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 5c4a54d9b6a4..ebc62ad4cc56 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -792,7 +792,6 @@ int mmc_attach_sdio(struct mmc_host *host) */ mmc_release_host(host); err = mmc_add_card(host->card); - mmc_claim_host(host); if (err) goto remove_added; @@ -805,12 +804,12 @@ int mmc_attach_sdio(struct mmc_host *host) goto remove_added; } + mmc_claim_host(host); return 0; remove_added: /* Remove without lock if the device has been added. */ - mmc_release_host(host); mmc_sdio_remove(host); mmc_claim_host(host); remove: |