libata/pdc_adma: make SFF EH handle non-bmdma SFF drivers and standardize pdc_adma ops
pdc_adma has interface similar to SFF but has its own DMA interface.
It currently implements noop bmdma ops to avoid crashing
ata_bmdma_error_handler() which BTW actually is EH for SFF drivers.
This patch makes ata_bmdma_error_handler() dereference bmdma ops iff
bmdma_addr is initialized as done in ata_bmdma_post_internal_cmd.
This change allows pdc_adma to standardize ops and use SFF
error_handler and post_internal_cmd.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mark Lord <liml@rtr.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index c601dce..5208ca2 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -2014,7 +2014,8 @@
ap->hsm_task_state = HSM_ST_IDLE;
- if (qc && (qc->tf.protocol == ATA_PROT_DMA ||
+ if (ap->ioaddr.bmdma_addr &&
+ qc && (qc->tf.protocol == ATA_PROT_DMA ||
qc->tf.protocol == ATAPI_PROT_DMA)) {
u8 host_stat;