diff options
| author | Baruch Siach <baruch@tkos.co.il> | 2014-01-23 08:50:38 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-02-03 09:11:45 +0100 |
| commit | cffcc92e966911e3ea9320fac943f545a353f2e0 (patch) | |
| tree | 99029050f3f2e7dc0f3c45fc8ff5b2c2a5d65a8d /drivers/gpio/gpio-xtensa.c | |
| parent | 38dbfb59d1175ef458d006556061adeaa8751b72 (diff) | |
| download | lwn-cffcc92e966911e3ea9320fac943f545a353f2e0.tar.gz lwn-cffcc92e966911e3ea9320fac943f545a353f2e0.zip | |
gpio: xtensa: fix build when XCHAL_HAVE_CP is 0
In xtensa coprocessors may exist without coprocessor context, i.e. they cannot
be disabled/enabled. In this case the RSR_CPENABLE/WSR_CPENABLE are undefined,
thus breaking the build. Fix the build by adding dummy versions of
enable_cp/disable_cp in this case.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-xtensa.c')
| -rw-r--r-- | drivers/gpio/gpio-xtensa.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-xtensa.c b/drivers/gpio/gpio-xtensa.c index 1d136eceda62..7081304d6797 100644 --- a/drivers/gpio/gpio-xtensa.c +++ b/drivers/gpio/gpio-xtensa.c @@ -40,6 +40,8 @@ #error GPIO32 option is not enabled for your xtensa core variant #endif +#if XCHAL_HAVE_CP + static inline unsigned long enable_cp(unsigned long *cpenable) { unsigned long flags; @@ -57,6 +59,20 @@ static inline void disable_cp(unsigned long flags, unsigned long cpenable) local_irq_restore(flags); } +#else + +static inline unsigned long enable_cp(unsigned long *cpenable) +{ + *cpenable = 0; /* avoid uninitialized value warning */ + return 0; +} + +static inline void disable_cp(unsigned long flags, unsigned long cpenable) +{ +} + +#endif /* XCHAL_HAVE_CP */ + static int xtensa_impwire_get_direction(struct gpio_chip *gc, unsigned offset) { return 1; /* input only */ |