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@ -121,15 +121,19 @@ index 7e77b6f..464c5b3 100644 |
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struct seq_file;
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struct module;
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@@ -99,6 +105,12 @@ extern int __gpio_cansleep(unsigned gpio);
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@@ -99,6 +105,16 @@ extern int __gpio_cansleep(unsigned gpio);
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#else
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+static inline int gpio_is_valid(int number)
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+static inline int __gpio_is_valid(int number)
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+{
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+ /* only non-negative numbers are valid */
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+ return number >= 0;
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+}
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+
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+#ifndef gpio_is_valid
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+#define gpio_is_valid __gpio_is_valid
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+#endif
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+
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/* platforms that don't directly support access to GPIOs through I2C, SPI,
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* or other blocking infrastructure can use these wrappers.
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