From da3dbb17a0e9a9ec7f5aed95f1fddadb790edc9d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 16 Jul 2007 14:29:40 +0900 Subject: libata: make ->scr_read/write callbacks return error code Convert ->scr_read/write callbacks to return error code to better indicate failure. This will help handling of SCR_NOTIFICATION. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/sata_promise.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) (limited to 'drivers/ata/sata_promise.c') diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c index d2fcb9a6bec..d39ebc23c4a 100644 --- a/drivers/ata/sata_promise.c +++ b/drivers/ata/sata_promise.c @@ -128,8 +128,8 @@ struct pdc_port_priv { dma_addr_t pkt_dma; }; -static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg); -static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val); +static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val); +static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val); static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent); static int pdc_common_port_start(struct ata_port *ap); static int pdc_sata_port_start(struct ata_port *ap); @@ -427,19 +427,20 @@ static int pdc_sata_cable_detect(struct ata_port *ap) return ATA_CBL_SATA; } -static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg) +static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val) { if (sc_reg > SCR_CONTROL) - return 0xffffffffU; - return readl(ap->ioaddr.scr_addr + (sc_reg * 4)); + return -EINVAL; + *val = readl(ap->ioaddr.scr_addr + (sc_reg * 4)); + return 0; } -static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg, - u32 val) +static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val) { if (sc_reg > SCR_CONTROL) - return; + return -EINVAL; writel(val, ap->ioaddr.scr_addr + (sc_reg * 4)); + return 0; } static void pdc_atapi_pkt(struct ata_queued_cmd *qc) @@ -642,8 +643,12 @@ static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc, | PDC_PCI_SYS_ERR | PDC1_PCI_PARITY_ERR)) ac_err_mask |= AC_ERR_HOST_BUS; - if (sata_scr_valid(ap)) - ehi->serror |= pdc_sata_scr_read(ap, SCR_ERROR); + if (sata_scr_valid(ap)) { + u32 serror; + + pdc_sata_scr_read(ap, SCR_ERROR, &serror); + ehi->serror |= serror; + } qc->err_mask |= ac_err_mask; -- cgit v1.2.3