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libata: increase PMP register access timeout to 3s 

This timeout was set low because previously PMP register access was
done via polling and register access timeouts could stack up.  This is
no longer the case.  One timeout will make all following accesses fail
immediately.

In rare cases both marvell and SIMG PMPs need almost a second.  Bump
it to 3s.

While at it, rename it to SATA_PMP_RW_TIMEOUT.  It's not specific to
SCR access.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
hifive-unleashed-5.1
Tejun Heo 2008-05-19 01:15:10 +09:00 committed by Jeff Garzik
parent e0614db2a3
commit bf1bff6fa9
2 changed files with 3 additions and 3 deletions
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4
drivers/ata/libata-pmp.c
View File

@ -48,7 +48,7 @@ static unsigned int sata_pmp_read(struct ata_link *link, int reg, u32 *r_val)
tf.device = link->pmp;
err_mask = ata_exec_internal(pmp_dev, &tf, NULL, DMA_NONE, NULL, 0,
SATA_PMP_SCR_TIMEOUT);
SATA_PMP_RW_TIMEOUT);
if (err_mask)
return err_mask;
@ -88,7 +88,7 @@ static unsigned int sata_pmp_write(struct ata_link *link, int reg, u32 val)
tf.lbah = (val >> 24) & 0xff;
return ata_exec_internal(pmp_dev, &tf, NULL, DMA_NONE, NULL, 0,
SATA_PMP_SCR_TIMEOUT);
SATA_PMP_RW_TIMEOUT);
}
/**

2
include/linux/libata.h
View File

@ -341,7 +341,7 @@ enum {
ATA_EH_PMP_TRIES = 5,
ATA_EH_PMP_LINK_TRIES = 3,
SATA_PMP_SCR_TIMEOUT = 250,
SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */
/* Horkage types. May be set by libata or controller on drives
(some horkage may be drive/controller pair dependant */