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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-01-09 21:36:01 -0800
committerWim Van Sebroeck <wim@iguana.be>2008-01-25 20:23:28 +0000
commit01c785dcb4e9fd6c4c370fd9915fc10585ed64bd (patch)
tree18afb2d73c5f2fe21cae6908c110440320b3fcff /drivers/watchdog/sbc60xxwdt.c
parentb47711bfbcd4eb77ca61ef0162487b20e023ae55 (diff)
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[WATCHDOG] wdt: fix locking
The audit of _p usage shows various drivers assume inb_p is somehow atomic. Of course it isn't and the delay can be split from the I/O cycle causing a timing violation on chips that matter (eg this one) With the proposed use of udelay() for some _p delays this will cease to be a mostly theoretical bug (as the delay stall is unsplittable) and wants fixing. Lots of other drivers need fixing this way too. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/watchdog/sbc60xxwdt.c')
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