From d5b560c014eddce747b2fd528d3071ded215b219 Mon Sep 17 00:00:00 2001 From: Sergey Shtylyov Date: Thu, 10 Nov 2022 00:47:42 +0300 Subject: ata: libata-sff: kill unused ata_sff_busy_sleep() Nobody seems to call ata_sff_busy_sleep(), so we can get rid of it... Signed-off-by: Sergey Shtylyov Signed-off-by: Damien Le Moal --- drivers/ata/libata-sff.c | 56 ------------------------------------------------ 1 file changed, 56 deletions(-) (limited to 'drivers/ata') diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 7916e369e15e..153f49e00713 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -184,62 +184,6 @@ void ata_sff_dma_pause(struct ata_port *ap) } EXPORT_SYMBOL_GPL(ata_sff_dma_pause); -/** - * ata_sff_busy_sleep - sleep until BSY clears, or timeout - * @ap: port containing status register to be polled - * @tmout_pat: impatience timeout in msecs - * @tmout: overall timeout in msecs - * - * Sleep until ATA Status register bit BSY clears, - * or a timeout occurs. - * - * LOCKING: - * Kernel thread context (may sleep). - * - * RETURNS: - * 0 on success, -errno otherwise. - */ -int ata_sff_busy_sleep(struct ata_port *ap, - unsigned long tmout_pat, unsigned long tmout) -{ - unsigned long timer_start, timeout; - u8 status; - - status = ata_sff_busy_wait(ap, ATA_BUSY, 300); - timer_start = jiffies; - timeout = ata_deadline(timer_start, tmout_pat); - while (status != 0xff && (status & ATA_BUSY) && - time_before(jiffies, timeout)) { - ata_msleep(ap, 50); - status = ata_sff_busy_wait(ap, ATA_BUSY, 3); - } - - if (status != 0xff && (status & ATA_BUSY)) - ata_port_warn(ap, - "port is slow to respond, please be patient (Status 0x%x)\n", - status); - - timeout = ata_deadline(timer_start, tmout); - while (status != 0xff && (status & ATA_BUSY) && - time_before(jiffies, timeout)) { - ata_msleep(ap, 50); - status = ap->ops->sff_check_status(ap); - } - - if (status == 0xff) - return -ENODEV; - - if (status & ATA_BUSY) { - ata_port_err(ap, - "port failed to respond (%lu secs, Status 0x%x)\n", - DIV_ROUND_UP(tmout, 1000), status); - return -EBUSY; - } - - return 0; -} -EXPORT_SYMBOL_GPL(ata_sff_busy_sleep); - static int ata_sff_check_ready(struct ata_link *link) { u8 status = link->ap->ops->sff_check_status(link->ap); -- cgit v1.2.3