AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-02-17 01:17:23 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

[libata sata_mv] handle lack of hardware nIEN support

Browse Source 
Handle errata (it was unintentional on this h/w, whereas its intentional
on others) whereby the nIEN bit in Device Control is ignored, leading to
a situation where a hardware interrupt completes the qc before the
polling code has a chance to.

This will get fixed The Right Way(tm) once Albert Lee's irq-pio
branch is merged, as the more natural PIO method on this hardware is
interrupt-driven.
This commit is contained in:
Jeff Garzik 2005-11-17 05:44:44 -05:00
parent 22374677d1
commit a2c91a8819
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/sata_mv.c
View File

@ -1219,6 +1219,10 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
handled++; handled++;
} }
if (ap &&
(ap->flags & (ATA_FLAG_PORT_DISABLED | ATA_FLAG_NOINTR)))
continue;
err_mask = ac_err_mask(ata_status); err_mask = ac_err_mask(ata_status);
shift = port << 1; /* (port * 2) */ shift = port << 1; /* (port * 2) */
@ -1237,7 +1241,8 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
VPRINTK("port %u IRQ found for qc, " VPRINTK("port %u IRQ found for qc, "
"ata_status 0x%x\n", port,ata_status); "ata_status 0x%x\n", port,ata_status);
/* mark qc status appropriately */ /* mark qc status appropriately */
ata_qc_complete(qc, err_mask); if (!(qc->tf.ctl & ATA_NIEN))
ata_qc_complete(qc, err_mask);
} }
} }
} }