diff options
| -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 d1cdb4ecb0b..ed91c043471 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); |