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ssb: add locking around gpio register accesses

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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>
This commit is contained in:
Hauke Mehrtens
2012-11-20 22:24:32 +00:00
committed by John Crispin
parent da22f22e91
commit 394bc7e38b
6 changed files with 109 additions and 11 deletions
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drivers/ssb/ssb_private.h
+8
View File
@@ -211,4 +211,12 @@ static inline void b43_pci_ssb_bridge_exit(void)
extern u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc);
extern u32 ssb_pmu_get_controlclock(struct ssb_chipcommon *cc);
#ifdef CONFIG_SSB_DRIVER_EXTIF
extern void ssb_extif_init(struct ssb_extif *extif);
#else
static inline void ssb_extif_init(struct ssb_extif *extif)
{
}
#endif
#endif /* LINUX_SSB_PRIVATE_H_ */