In order to fix issue described in: "ASoC: Intel: sst: ipc command timeout" https://patchwork.kernel.org/patch/11482829/
use readq function, which is meant to read 64 bit values from registers. On 32 bit platforms it falls back to two readl calls.
Signed-off-by: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com Reported-by: Brent Lu brent.lu@intel.com --- sound/soc/intel/common/sst-dsp.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/sound/soc/intel/common/sst-dsp.c b/sound/soc/intel/common/sst-dsp.c index ec66be269b69..36c077aa386e 100644 --- a/sound/soc/intel/common/sst-dsp.c +++ b/sound/soc/intel/common/sst-dsp.c @@ -10,7 +10,7 @@ #include <linux/interrupt.h> #include <linux/module.h> #include <linux/platform_device.h> -#include <linux/io.h> +#include <linux/io-64-nonatomic-lo-hi.h> #include <linux/delay.h>
#include "sst-dsp.h" @@ -34,16 +34,13 @@ EXPORT_SYMBOL_GPL(sst_shim32_read);
void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value) { - memcpy_toio(addr + offset, &value, sizeof(value)); + writeq(value, addr + offset); } EXPORT_SYMBOL_GPL(sst_shim32_write64);
u64 sst_shim32_read64(void __iomem *addr, u32 offset) { - u64 val; - - memcpy_fromio(&val, addr + offset, sizeof(val)); - return val; + return readq(addr + offset); } EXPORT_SYMBOL_GPL(sst_shim32_read64);