On Thu, Apr 12, 2018 at 10:51:49PM +0100, James Hogan wrote: > On Tue, Apr 03, 2018 at 08:55:04AM -0400, Sinan Kaya wrote: > > While a barrier is present in writeX() function before the register write, > > a similar barrier is missing in the readX() function after the register > > read. This could allow memory accesses following readX() to observe > > stale data. > > > > Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx> > > Reported-by: Arnd Bergmann <arnd@xxxxxxxx> > > Both patches look like obvious improvements to me, so I'm happy to apply > to my fixes branch. Though having said that, a comment to go with the rmb() (as suggested by checkpatch) to detail the situation we're concerned about would be nice to have. Cheers James
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