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author | Grant Likely <grant.likely@secretlab.ca> | 2008-01-25 05:25:31 (GMT) |
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committer | Grant Likely <grant.likely@secretlab.ca> | 2008-01-26 22:32:19 (GMT) |
commit | 4fb4c5582475452d3bf7c5072ef2d15ee06f7723 (patch) | |
tree | 9e75d2795deafb6601fb31c858874ebd554a4135 /drivers/ata | |
parent | c8004a28186110657aa3e75135a6b96ebfa3e8f0 (diff) | |
download | linux-fsl-qoriq-4fb4c5582475452d3bf7c5072ef2d15ee06f7723.tar.xz |
[POWERPC] mpc52xx_psc_spi device driver must not touch port_config and cdm
It is dangerous for an mpc52xx device driver to modify the port_config
register. If the driver is probed incorrectly, it will change the pin
IO configuration in ways which may not be compatible with the board.
port_config should be set up by the bootloader, or failing that, in
the platform setup code in arch/powerpc/platforms/52xx.
Also, modifying CDM registers directly can cause a race condition with
other drivers. Instead call a common routine to modify CDM settings.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Dragos Carp <dragos.carp@toptica.com>
Diffstat (limited to 'drivers/ata')
0 files changed, 0 insertions, 0 deletions