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authorTejun Heo <htejun@gmail.com>2008-02-19 11:35:37 +0100
committerJens Axboe <jens.axboe@oracle.com>2008-02-19 11:35:37 +0100
commit56c819df77f96c3fc0c2a979e12b478403728790 (patch)
tree104a8538980dbb267a9a26cb4c34eae583cedeb3 /block
parente164094964e6e20fe7fce418e06a9dce952bb7a4 (diff)
libata: update ATAPI overflow draining
For misc ATAPI commands which transfer variable length data to the host, overflow can occur due to application or hardware bug. Such overflows can be ignored safely as long as overflow data is properly drained. libata HSM implementation has this implemented in __atapi_pio_bytes() and recently updated for 2.6.24-rc but it requires further improvements. Improve drain logic such that... * Report overflow errors using ehi desc mechanism instead of printing directly. * Properly calculate the number of bytes to be drained considering actual number of consumed bytes for partial draining. Signed-off-by: Tejun Heo <htejun@gmail.com> Acked-by: Albert Lee <albertcc@tw.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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