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authorHauke Mehrtens <hauke@hauke-m.de>2012-11-20 22:24:27 (GMT)
committerJohn Crispin <blogic@openwrt.org>2012-11-21 20:55:51 (GMT)
commitef85fb28305fad7617f307383ebba554a3a891a2 (patch)
treeb644911eafc8f3d0d59fcdbceac556c9f9567f94 /include/linux/bcma
parent0ef0165b206f4dc86d719c92b0b6a244f690ceb4 (diff)
downloadlinux-fsl-qoriq-ef85fb28305fad7617f307383ebba554a3a891a2.tar.xz
bcma: add locking around GPIO register accesses
The GPIOs are access through some registers in the chip common core. 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/4585 Acked-by: Florian Fainelli <florian@openwrt.org>
Diffstat (limited to 'include/linux/bcma')
-rw-r--r--include/linux/bcma/bcma_driver_chipcommon.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h
index 1cf1749..a085d98 100644
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -567,6 +567,9 @@ struct bcma_drv_cc {
int nr_serial_ports;
struct bcma_serial_port serial_ports[4];
#endif /* CONFIG_BCMA_DRIVER_MIPS */
+
+ /* Lock for GPIO register access. */
+ spinlock_t gpio_lock;
};
/* Register access */