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authorPavel Pisa <ppisa@pikron.com>2006-04-30 10:35:54 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-04-30 10:35:54 -0400
commit81d38428df26377c91e7e193aa4d2fdfdcda300a (patch)
treea20817dcdee6f2c73d8b5c8cbfb57518466794f8 /fs/namespace.c
parente0a515bc6a2188f02916e976f419a8640312e32a (diff)
[ARM] 3485/1: i.MX: MX1 SD/MMC fix of unintentional double start possibility
Patch from Pavel Pisa The clock starting imxmci_start_clock() function contains hardware issue workaround, which repeats start attempt, if SDHC does not react on the first trial. But the second start attempt can be taken even, if the first succeed and test code misses time limited clock running phase due to delay caused by schedule to other task or some another device interrupt. This change enables to detect such situation. The performance is not issue, because usually at full clock rate only about six loops in delay cycle are needed. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'fs/namespace.c')
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