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| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-02-19 19:02:23 +0300 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2009-03-09 09:25:37 -0500 |
| commit | c026c98739c7e435440e76cbcd96e0f8ebeeada0 (patch) | |
| tree | 98f0ddc17ef2a3123888f2259b1999b32c905909 /arch/powerpc/platforms/83xx | |
| parent | 30c404699dd650f213d480d263c775915a0e1297 (diff) | |
| download | op-kernel-dev-c026c98739c7e435440e76cbcd96e0f8ebeeada0.zip op-kernel-dev-c026c98739c7e435440e76cbcd96e0f8ebeeada0.tar.gz | |
powerpc/83xx: Do not configure or probe disabled FSL DR USB controllers
On MPC837X CPUs Dual-Role USB isn't always available (for example DR
USB pins can be muxed away to eSDHC).
U-Boot adds status = "disabled" property into the DR USB nodes to
indicate that we must not try to configure or probe Dual-Role USB,
otherwise we'll break eSDHC support on targets with MPC837X CPUs.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/83xx')
| -rw-r--r-- | arch/powerpc/platforms/83xx/usb.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c index cc99c28..11e1fac 100644 --- a/arch/powerpc/platforms/83xx/usb.c +++ b/arch/powerpc/platforms/83xx/usb.c @@ -14,6 +14,7 @@ #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/errno.h> +#include <linux/of.h> #include <asm/io.h> #include <asm/prom.h> @@ -210,7 +211,7 @@ int mpc837x_usb_cfg(void) int ret = 0; np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr"); - if (!np) + if (!np || !of_device_is_available(np)) return -ENODEV; prop = of_get_property(np, "phy_type", NULL); |
