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authorTejun Heo <htejun@gmail.com>2008-04-07 17:47:20 +0400
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 23:44:23 +0400
commit5958e3025fd9d97429163e074d9cfa3848f51f28 (patch)
treef20492dc35fc2651452c871fbc812bd4f8379b40 /drivers/ata/libata-pmp.c
parentac371987a81c61c2efbd6931245cdcaf43baad89 (diff)
downloadlinux-5958e3025fd9d97429163e074d9cfa3848f51f28.tar.xz
libata: move PMP SCR access failure during reset to ata_eh_reset()
If PMP fan-out reset fails and SCR isn't accessible, PMP should be reset. This used to be tested by sata_pmp_std_hardreset() and communicated to EH by -ERESTART. However, this logic is generic and doesn't really have much to do with specific hardreset implementation. This patch moves SCR access failure detection logic to ata_eh_reset() where it belongs. As this makes sata_pmp_std_hardreset() identical to sata_std_hardreset(), the function is killed and replaced with the standard method. Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'drivers/ata/libata-pmp.c')
-rw-r--r--drivers/ata/libata-pmp.c35
1 files changed, 0 insertions, 35 deletions
diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index 2f8a9577c26d..9c998611b644 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -176,41 +176,6 @@ int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val)
}
/**
- * sata_pmp_std_hardreset - standard hardreset method for PMP link
- * @link: link to be reset
- * @class: resulting class of attached device
- * @deadline: deadline jiffies for the operation
- *
- * Hardreset PMP port @link. Note that this function doesn't
- * wait for BSY clearance. There simply isn't a generic way to
- * wait the event. Instead, this function return -EAGAIN thus
- * telling libata-EH to followup with softreset.
- *
- * LOCKING:
- * Kernel thread context (may sleep)
- *
- * RETURNS:
- * 0 on success, -errno otherwise.
- */
-int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class,
- unsigned long deadline)
-{
- u32 tmp;
- int rc;
-
- DPRINTK("ENTER\n");
-
- rc = sata_std_hardreset(link, class, deadline);
-
- /* if SCR isn't accessible, we need to reset the PMP */
- if (rc && rc != -EAGAIN && sata_scr_read(link, SCR_STATUS, &tmp))
- rc = -ERESTART;
-
- DPRINTK("EXIT, rc=%d\n", rc);
- return rc;
-}
-
-/**
* sata_pmp_read_gscr - read GSCR block of SATA PMP
* @dev: PMP device
* @gscr: buffer to read GSCR block into