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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-04-21 09:20:16 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-05-25 05:53:52 +0200 |
| commit | df3ef2d3c92c0a562ebde3699af7d12401fddf60 (patch) | |
| tree | 4969fcb7e716bcedd8634ccfdf14e3d1f274abee /drivers/mmc/host/tmio_mmc.h | |
| parent | mmc: add runtime and system power-management support to the MMCIF driver (diff) | |
| download | linux-df3ef2d3c92c0a562ebde3699af7d12401fddf60.tar.xz linux-df3ef2d3c92c0a562ebde3699af7d12401fddf60.zip | |
mmc: protect the tmio_mmc driver against a theoretical race
The MMC subsystem does not guarantee, that host driver .request() and
.set_ios() callbacks are serialised. Such concurrent calls, however,
do not have to be meaningfully supported, drivers just have to make
sure to avoid any severe problems.
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 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index c1470e6b138d..58138a203877 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -19,6 +19,7 @@ #include <linux/highmem.h> #include <linux/mmc/tmio.h> #include <linux/pagemap.h> +#include <linux/spinlock.h> /* Definitions for values the CTRL_SDIO_STATUS register can take. */ #define TMIO_SDIO_STAT_IOIRQ 0x0001 |