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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2006-05-16 20:16:41 +0400
committerDavid Woodhouse <dwmw2@infradead.org>2006-05-16 17:25:19 +0100
commit155285c4775b7027b01a5b744c721ae43cced798 (patch)
tree4bbfba4b281c3368c2544eafa1e93b63b517c509 /drivers/video/sticore.h
parentc41ff6e5f38b02ff927d0d510e28dc1392bb4690 (diff)
NAND: AMD Au1550 driver reads write-only register
During the last cleanup of the AMD Au1550 NAND driver the old buglet was reintroduced: as the MEM_STNDCTL register is write-only and seem to always read as 0x31, read-modify-write to it done in au1xxx_nand_init() will have the side effect of enabling -RCS0/1 pin override (via bits 4/5 of this reg.), thus possibly causing a contention on the static bus when the NOR flash (using -RCS0) or board control status registers (using -RCS2) are read. Luckily, this goes away with a first NAND access, since au1550_hwcontrol() doesn't try to read this register before writing anymore. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'drivers/video/sticore.h')
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