diff options
| author | Sujith Reddy Thumma <sthumma@codeaurora.org> | 2011-02-17 21:37:48 +0530 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-31 15:20:51 -0700 |
| commit | 6b2e9c4ce0645fee95ba0aa24d7875706d9cfd04 (patch) | |
| tree | 84a416fdda7806929e797778765e2423f45758d5 /include/linux/mmc | |
| parent | 636cddbaa907ee1f37bf03e642ae4086e819c564 (diff) | |
mmc: core: Fix race between runtime PM suspend and block requests
There is a possible race with mmc_claim_host() in mmc_sd_suspend()/
mmc_suspend() and mmc_claim_host() in mmc_blk_issue_rq() when runtime
pm is enabled. Fix this by blocking processing of requests until the
previous runtime suspend is processed and then resume as part of
msmsdcc_enable(). Previous fix has card detection failure as a side effect
during resume.
Change-Id: I9cb31269638d9db4e630eb22b973a5335af1bda4
Signed-off-by: Sujith Reddy Thumma <sthumma@codeaurora.org>
[sboyd: Dropped msm driver change]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
[subhashj@codeaurora.org: fixed trivial merge conflict]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index e173a6e3462e..01ae900ef4bf 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -357,6 +357,7 @@ struct mmc_host { wait_queue_head_t wq; struct task_struct *claimer; /* task that has host claimed */ + struct task_struct *suspend_task; int claim_cnt; /* "claim" nesting count */ struct delayed_work detect; |