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| author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2017-01-30 11:02:06 +0100 |
|---|---|---|
| committer | Sekhar Nori <nsekhar@ti.com> | 2017-01-31 13:18:21 +0100 |
| commit | d436501e06792dd44101e0e45c32f6c1ea965acb (patch) | |
| tree | 2b03732f0d8a8b7ed971d2473d512b7130404c0f /drivers/ata | |
| parent | sata: ahci-da850: implement a workaround for the softreset quirk (diff) | |
| download | linux-d436501e06792dd44101e0e45c32f6c1ea965acb.tar.xz linux-d436501e06792dd44101e0e45c32f6c1ea965acb.zip | |
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: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci.h | 3 | ||||
| -rw-r--r-- | drivers/ata/libahci.c | 18 |
2 files changed, 16 insertions, 5 deletions
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index 0cc08f892fea..5db6ab261643 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -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); diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index ee7db3119b18..3159f9e66d8f 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -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) { |