tree 0c80483ad6aa829d8ad4d58a889fd736cf9d09c1
parent 8895dd3b1c9bd4acc264473963ad8c23c6f13dee
author John Keeping <john@metanate.com> 1679914868 +0100
committer Kever Yang <kever.yang@rock-chips.com> 1682061361 +0800

rockchip: misc: fix misc_read() return check

misc_read() is documented to return the number of bytes read or a
negative error value.  The Rockchip drivers currently do not implement
this correctly and instead return zero on success or a negative error
value.

In preparation for fixing the drivers, fix the condition here to only
error on negative values.

Suggested-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>