From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> __iowmb() isn't available on most architectures. Make its use optional so that the driver can be built on other architectures with COMPILE_TEST=y. v2: Add a comment stating this is for COMPILE_TEST (Tomi) Cc: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> Acked-by: Jyri Sarha <jyri.sarha@xxxxxx> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/tilcdc/tilcdc_regs.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h index f90e2dc3457c..332b24327386 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h @@ -125,7 +125,10 @@ static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data) #if defined(iowrite64) && !defined(iowrite64_is_nonatomic) iowrite64(data, addr); #else + /* allow compilation without __iowmb() for COMPILE_TEST */ +#ifdef __iowmb __iowmb(); +#endif /* This compiles to strd (=64-bit write) on ARM7 */ *(volatile u64 __force *)addr = __cpu_to_le64(data); #endif -- 2.45.2
