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authorDavid Brownell <david-b@pacbell.net>2008-05-23 13:05:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-05-24 09:56:14 -0700
commit25d5cb4b0375e5864ec0ccf35e12ff1d1b5cf3f0 (patch)
tree0d83e4176f9a8178a98631097fbf839a53702d94 /drivers/video
parent5c02b575780d0d785815a1e7b79a98edddee895a (diff)
downloadop-kernel-dev-25d5cb4b0375e5864ec0ccf35e12ff1d1b5cf3f0.zip
op-kernel-dev-25d5cb4b0375e5864ec0ccf35e12ff1d1b5cf3f0.tar.gz
spi: remove some spidev oops-on-rmmod paths
Somehow the spidev code forgot to include a critical mechanism: when the underlying device is removed (e.g. spi_master rmmod), open file descriptors must be prevented from issuing new I/O requests to that device. On penalty of the oopsing reported by Sebastian Siewior <bigeasy@tglx.de> ... This is a partial fix, adding handshaking between the lower level (SPI messaging) and the file operations using the spi_dev. (It also fixes an issue where reads and writes didn't return the number of bytes sent or received.) There's still a refcounting issue to be addressed (separately). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Reported-by: Sebastian Siewior <bigeasy@tglx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video')
0 files changed, 0 insertions, 0 deletions
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