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libahci: wrong comments in ahci_do_softreset()

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AHCI 1.3.1 Spec says that software shall build two H2D register
FISes in the command list to send a software reset.
The comments in ahci_do_softreset() is currently D2H instead of H2D.

Signed-off-by: Minwoo Im <dn3108@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Minwoo Im 2017-06-11 23:53:00 +09:00 committed by Tejun Heo
parent f356b08205
commit 08fc4756c3
1 changed files with 2 additions and 2 deletions
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4
drivers/ata/libahci.c
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@ -1400,7 +1400,7 @@ int ahci_do_softreset(struct ata_link *link, unsigned int *class,
ata_tf_init(link->device, &tf);
/* issue the first D2H Register FIS */
/* issue the first H2D Register FIS */
msecs = 0;
now = jiffies;
if (time_after(deadline, now))
@ -1417,7 +1417,7 @@ int ahci_do_softreset(struct ata_link *link, unsigned int *class,
/* spec says at least 5us, but be generous and sleep for 1ms */
ata_msleep(ap, 1);
/* issue the second D2H Register FIS */
/* issue the second H2D Register FIS */
tf.ctl &= ~ATA_SRST;
ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);