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| author | Mark Lord <kernel@teksavvy.com> | 2010-08-20 10:13:16 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2010-08-25 19:24:16 -0400 |
| commit | 55ee67f837882f28a900705a2ca1af257ab6c53d (patch) | |
| tree | 91393e3155968c1654bfdf89fdbe404afd736554 | |
| parent | 44b733809a5aba7f6b15a548d31a56d25bf3851c (diff) | |
| download | linux-3.10-55ee67f837882f28a900705a2ca1af257ab6c53d.tar.gz linux-3.10-55ee67f837882f28a900705a2ca1af257ab6c53d.tar.bz2 linux-3.10-55ee67f837882f28a900705a2ca1af257ab6c53d.zip | |
libata-sff: remove harmful BUG_ON from ata_bmdma_qc_issue
Remove harmful BUG_ON() from ata_bmdma_qc_issue(),
as it casts too wide of a net and breaks sata_mv.
It also crashes the kernel while doing the BUG_ON().
There's already a WARN_ON_ONCE() further down to catch
the case of POLLING for a BMDMA operation.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: stable@kernel.org
| -rw-r--r-- | drivers/ata/libata-sff.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 674c1436491..3b82d8ef76f 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -2735,10 +2735,6 @@ unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; - /* see ata_dma_blacklisted() */ - BUG_ON((ap->flags & ATA_FLAG_PIO_POLLING) && - qc->tf.protocol == ATAPI_PROT_DMA); - /* defer PIO handling to sff_qc_issue */ if (!ata_is_dma(qc->tf.protocol)) return ata_sff_qc_issue(qc); |