Commit d436501e authored by Bartosz Golaszewski's avatar Bartosz Golaszewski Committed by Sekhar Nori
Browse files

sata: ahci: export ahci_do_hardreset() locally 



We need a way to retrieve the information about the online state of
the link in the ahci-da850 driver.

Create a new function: ahci_do_hardreset() which is called from
ahci_hardreset() for backwards compatibility, but has an additional
argument: 'online' - which can be used to check if the link is online
after this function returns.

The new routine will be used in the ahci-da850 driver to avoid code
duplication when implementing a workaround for tha da850 SATA
controller quirk/instability.

Signed-off-by: default avatarBartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent f4d435f3

drivers/ata/ahci.h

+3 −0
Original line number Diff line number Diff line
@@ -398,6 +398,9 @@ int ahci_do_softreset(struct ata_link *link, unsigned int *class, 
		      int pmp, unsigned long deadline,

		      int (*check_ready)(struct ata_link *link));



int ahci_do_hardreset(struct ata_link *link, unsigned int *class,

		      unsigned long deadline, bool *online);



unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);

int ahci_stop_engine(struct ata_port *ap);

void ahci_start_fis_rx(struct ata_port *ap);

drivers/ata/libahci.c

+13 −5
Original line number Diff line number Diff line
@@ -1519,8 +1519,8 @@ static int ahci_pmp_retry_softreset(struct ata_link *link, unsigned int *class, 
	return rc;

}



static int ahci_hardreset(struct ata_link *link, unsigned int *class,

			  unsigned long deadline)

int ahci_do_hardreset(struct ata_link *link, unsigned int *class,

		      unsigned long deadline, bool *online)

{

	const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);

	struct ata_port *ap = link->ap;
@@ -1528,7 +1528,6 @@ static int ahci_hardreset(struct ata_link *link, unsigned int *class, 
	struct ahci_host_priv *hpriv = ap->host->private_data;

	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;

	struct ata_taskfile tf;

	bool online;

	int rc;



	DPRINTK("ENTER\n");
@@ -1540,17 +1539,26 @@ static int ahci_hardreset(struct ata_link *link, unsigned int *class, 
	tf.command = ATA_BUSY;

	ata_tf_to_fis(&tf, 0, 0, d2h_fis);



	rc = sata_link_hardreset(link, timing, deadline, &online,

	rc = sata_link_hardreset(link, timing, deadline, online,

				 ahci_check_ready);



	hpriv->start_engine(ap);



	if (online)

	if (*online)

		*class = ahci_dev_classify(ap);



	DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);

	return rc;

}

EXPORT_SYMBOL_GPL(ahci_do_hardreset);



static int ahci_hardreset(struct ata_link *link, unsigned int *class,

			  unsigned long deadline)

{

	bool online;



	return ahci_do_hardreset(link, class, deadline, &online);

}



static void ahci_postreset(struct ata_link *link, unsigned int *class)

{

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