From c2cd76ff106b8bd9c0a754c6439c74e86fd2aba7 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Wed, 16 Nov 2005 09:23:30 -0500 Subject: [PATCH] [libata ahci] tone down ATAPI errors ATA devices don't generate many errors, so the preferred method is to printk() when they occur. ATAPI devices generate tons of exceptions during the normal course of operation, so this change skips logging the most common class of errors. --- drivers/scsi/ahci.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index 894e7113e0b3..5386c0d6101c 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -558,23 +558,25 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc) pp->cmd_slot[0].opts |= cpu_to_le32(n_elem << 16); } -static void ahci_intr_error(struct ata_port *ap, u32 irq_stat) +static void ahci_restart_port(struct ata_port *ap, u32 irq_stat) { void __iomem *mmio = ap->host_set->mmio_base; void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no); u32 tmp; int work; - printk(KERN_WARNING "ata%u: port reset, " - "p_is %x is %x pis %x cmd %x tf %x ss %x se %x\n", - ap->id, - irq_stat, - readl(mmio + HOST_IRQ_STAT), - readl(port_mmio + PORT_IRQ_STAT), - readl(port_mmio + PORT_CMD), - readl(port_mmio + PORT_TFDATA), - readl(port_mmio + PORT_SCR_STAT), - readl(port_mmio + PORT_SCR_ERR)); + if ((ap->device[0].class != ATA_DEV_ATAPI) || + ((irq_stat & PORT_IRQ_TF_ERR) == 0)) + printk(KERN_WARNING "ata%u: port reset, " + "p_is %x is %x pis %x cmd %x tf %x ss %x se %x\n", + ap->id, + irq_stat, + readl(mmio + HOST_IRQ_STAT), + readl(port_mmio + PORT_IRQ_STAT), + readl(port_mmio + PORT_CMD), + readl(port_mmio + PORT_TFDATA), + readl(port_mmio + PORT_SCR_STAT), + readl(port_mmio + PORT_SCR_ERR)); /* stop DMA */ tmp = readl(port_mmio + PORT_CMD); @@ -632,7 +634,7 @@ static void ahci_eng_timeout(struct ata_port *ap) printk(KERN_ERR "ata%u: BUG: timeout without command\n", ap->id); } else { - ahci_intr_error(ap, readl(port_mmio + PORT_IRQ_STAT)); + ahci_restart_port(ap, readl(port_mmio + PORT_IRQ_STAT)); /* hack alert! We cannot use the supplied completion * function from inside the ->eh_strategy_handler() thread. @@ -677,7 +679,7 @@ static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc) err_mask = AC_ERR_HOST_BUS; /* command processing has stopped due to error; restart */ - ahci_intr_error(ap, status); + ahci_restart_port(ap, status); if (qc) ata_qc_complete(qc, err_mask); -- 2.20.1