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| author | Eric Miao <eric.miao@marvell.com> | 2008-06-16 09:38:27 +0800 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-07-09 21:38:32 +0100 |
| commit | 0fedb0cad6ebc00af01013b5bbe52dd596853c63 (patch) | |
| tree | 40f6993a3926ec109e639dcb765db449c60a8f6b /arch/arm | |
| parent | d4a678080e83ff96e3933fa1e631cef3cda04bef (diff) | |
| download | blackbird-op-linux-0fedb0cad6ebc00af01013b5bbe52dd596853c63.tar.gz blackbird-op-linux-0fedb0cad6ebc00af01013b5bbe52dd596853c63.zip | |
[ARM] pxa: introduce dedicated __mfp_validate() to check PXA2xx MFP
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-pxa/mfp-pxa2xx.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c index d1cdb4ecb0b8..ed91c043471b 100644 --- a/arch/arm/mach-pxa/mfp-pxa2xx.c +++ b/arch/arm/mach-pxa/mfp-pxa2xx.c @@ -91,6 +91,18 @@ static int __mfp_config_gpio(unsigned gpio, unsigned long c) return 0; } +static inline int __mfp_validate(int mfp) +{ + int gpio = mfp_to_gpio(mfp); + + if ((mfp > MFP_PIN_GPIO127) || !gpio_desc[gpio].valid) { + pr_warning("%s: GPIO%d is invalid pin\n", __func__, gpio); + return -1; + } + + return gpio; +} + void pxa2xx_mfp_config(unsigned long *mfp_cfgs, int num) { unsigned long flags; @@ -99,13 +111,9 @@ void pxa2xx_mfp_config(unsigned long *mfp_cfgs, int num) for (i = 0, c = mfp_cfgs; i < num; i++, c++) { - gpio = mfp_to_gpio(MFP_PIN(*c)); - - if (!gpio_desc[gpio].valid) { - pr_warning("%s: GPIO%d is invalid pin\n", - __func__, gpio); + gpio = __mfp_validate(MFP_PIN(*c)); + if (gpio < 0) continue; - } local_irq_save(flags); |
