When a single device error is detected, the device under the error is indicated by the error bit set in the DER. There is a one to one mapping between register bit and devices on Port multiplier(PMP) i.e. bit 0 represents PMP device 0 and bit 1 represents PMP device 1 etc. Current implementation treats Device error register value as device number not set of bits representing multiple device on PMP. It is changed to consider bit level. No need to check for each set bit as all command is going to be aborted. Signed-off-by: Prabhakar Kushwaha <prabhakar@xxxxxxxxxxxxx> Signed-off-by: Ashish Kalra <B00888@xxxxxxxxxxxxx> --- git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git (branch master) This patch is already gone through review of linuxppc-dev mail list. drivers/ata/sata_fsl.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index b0214d0..895771c 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -1040,12 +1040,14 @@ static void sata_fsl_error_intr(struct ata_port *ap) /* find out the offending link and qc */ if (ap->nr_pmp_links) { + unsigned int dev_num; dereg = ioread32(hcr_base + DE); iowrite32(dereg, hcr_base + DE); iowrite32(cereg, hcr_base + CE); - if (dereg < ap->nr_pmp_links) { - link = &ap->pmp_link[dereg]; + dev_num = ffs(dereg)-1; + if (dev_num < ap->nr_pmp_links) { + link = &ap->pmp_link[dev_num]; ehi = &link->eh_info; qc = ata_qc_from_tag(ap, link->active_tag); /* -- 1.7.3 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html