On Thu, Nov 02, 2017 at 11:39:51PM -0700, Wilson Lee wrote: > In U-boot, serial_tstc was use to determine is there have a character in > serial console that pending for read. If there is no "pending" function > implemented in serial driver, the serial-uclass will return "true(1)" > to indicate there have a character pending to read. > > Thus, read a character from nulldev serial will result in continuous > getting -EAGAIN return which might lead system to hang. > > This commit is to fix a bug in nulldev serial which implement "pending" > function in nulldev serial to always indicate there is no character in > console that pending for read. > > Signed-off-by: Wilson Lee <wilson....@ni.com> > Cc: Joe Hershberger <joe.hershber...@ni.com> > Cc: Keng Soon Cheah <keng.soon.ch...@ni.com> > Cc: Chen Yee Chew <chen.yee.c...@ni.com> > Cc: Bin Meng <bmeng...@gmail.com>
Applied to u-boot/master, thanks! -- Tom
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