diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-07-14 14:12:38 +0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-07-21 18:35:05 +0400 |
| commit | b9269fdd4f61aa4d185c982b0f84a3e7b7ccb4d2 (patch) | |
| tree | 73cd02b34f61e71d6a4ceff5c09b78a9ba17eadb /drivers/mmc/host/tmio_mmc.h | |
| parent | 15bed0f2fa8e1d7db201692532c210a7823d2d21 (diff) | |
| download | linux-b9269fdd4f61aa4d185c982b0f84a3e7b7ccb4d2.tar.xz | |
mmc: tmio: fix recursive spinlock, don't schedule with interrupts disabled
Calling mmc_request_done() under a spinlock with interrupts disabled
leads to a recursive spin-lock on request retry path and to
scheduling in atomic context. This patch fixes both these problems
by moving mmc_request_done() to the scheduler workqueue.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/tmio_mmc.h')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index 211ef6e7a820..f0d7c4349793 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -18,6 +18,7 @@ #include <linux/highmem.h> #include <linux/mmc/tmio.h> +#include <linux/mutex.h> #include <linux/pagemap.h> #include <linux/spinlock.h> @@ -73,8 +74,11 @@ struct tmio_mmc_host { /* Track lost interrupts */ struct delayed_work delayed_reset_work; - spinlock_t lock; + struct work_struct done; + + spinlock_t lock; /* protect host private data */ unsigned long last_req_ts; + struct mutex ios_lock; /* protect set_ios() context */ }; int tmio_mmc_host_probe(struct tmio_mmc_host **host, |