[PATCH V2 6/6] coresight-stm: adding driver for CoreSight STM component
- From
- Alexander Shishkin <alexander.shishkin@linux.intel.com>
- Date
- 2016-02-05 13:06:34
- Also in
- linux-api, lkml
- Reply to
- Chunyan Zhang, 2016-02-03
Chunyan Zhang [off-list ref] writes:
quoted hunk ↗ jump to hunk
+#ifndef CONFIG_64BIT +static inline void __raw_writeq(u64 val, volatile void __iomem *addr) +{ + asm volatile("strd %1, %0" + : "+Qo" (*(volatile u64 __force *)addr) + : "r" (val)); +}
Is it really ok to do this for all !64bit arms, inside a driver, just
like that? I'm not an expert, but I'm pretty sure there's more to it.
Regards,
--
Alex