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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-07-14 18:39:10 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-07-21 16:35:07 +0200 |
| commit | 162f43e31c5a376ec16336e5d0ac973373d54c89 (patch) | |
| tree | 366ce758f78683291ca7db913276611ffaca00fb /drivers/mmc/host/tmio_mmc.h | |
| parent | mmc: tmio: fix a recently introduced bug in DMA code (diff) | |
| download | linux-162f43e31c5a376ec16336e5d0ac973373d54c89.tar.xz linux-162f43e31c5a376ec16336e5d0ac973373d54c89.zip | |
mmc: tmio: fix a deadlock
Currently the tmio-mmc driver contains a recursive runtime PM method
invocation, which leads to a deadlock on a mutex. Avoid it by taking
care not to request DMA too early.
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 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index ba0d8e66001d..087d88023ba1 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -109,6 +109,7 @@ static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg, #if defined(CONFIG_MMC_SDHI) || defined(CONFIG_MMC_SDHI_MODULE) void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data); +void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable); void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata); void tmio_mmc_release_dma(struct tmio_mmc_host *host); #else @@ -117,6 +118,10 @@ static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host, { } +static inline void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable) +{ +} + static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata) { |