diff options
| author | Hauke Mehrtens <hauke@hauke-m.de> | 2012-11-20 22:24:32 +0000 |
|---|---|---|
| committer | John Crispin <blogic@openwrt.org> | 2012-11-21 21:55:52 +0100 |
| commit | 394bc7e38be79987ed15de203920c3cddb724cc1 (patch) | |
| tree | 64cb52592aab0fb2f392560fb99d8d61caa81f4a /include/linux/ssb/ssb_driver_extif.h | |
| parent | da22f22e91f0d14d996c7258101575a5a06ddf85 (diff) | |
| download | linux-394bc7e38be79987ed15de203920c3cddb724cc1.tar.gz linux-394bc7e38be79987ed15de203920c3cddb724cc1.tar.bz2 linux-394bc7e38be79987ed15de203920c3cddb724cc1.zip | |
ssb: add locking around gpio register accesses
The GPIOs are access through some registers in the chip common core or
over extif. We need locking around these GPIO accesses, all GPIOs are
accessed through the same registers and parallel writes will cause
problems.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4590
Acked-by: Florian Fainelli <florian@openwrt.org>
Diffstat (limited to 'include/linux/ssb/ssb_driver_extif.h')
| -rw-r--r-- | include/linux/ssb/ssb_driver_extif.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ssb/ssb_driver_extif.h b/include/linux/ssb/ssb_driver_extif.h index 91161f0aa22b..bd2306854a91 100644 --- a/include/linux/ssb/ssb_driver_extif.h +++ b/include/linux/ssb/ssb_driver_extif.h @@ -158,6 +158,7 @@ struct ssb_extif { struct ssb_device *dev; + spinlock_t gpio_lock; }; static inline bool ssb_extif_available(struct ssb_extif *extif) |