From: Tejun Heo Date: Thu, 18 Oct 2007 02:53:39 +0000 (+0900) Subject: sata_sis: fix SCR read breakage X-Git-Tag: v2.6.24-rc1~126^2~2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aaa092a114696f4425cd57c4d7fa05110007e247;p=linux-2.6 sata_sis: fix SCR read breakage SCR read for controllers which uses PCI configuration space for SCR access got broken while adding @val argument to SCR accessors. Fix it. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- diff --git a/drivers/ata/sata_sis.c b/drivers/ata/sata_sis.c index 8d98a9fb0a..dc8e5c0647 100644 --- a/drivers/ata/sata_sis.c +++ b/drivers/ata/sata_sis.c @@ -166,11 +166,11 @@ static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg) return addr; } -static u32 sis_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg) +static u32 sis_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg, u32 *val) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg); - u32 val, val2 = 0; + u32 val2 = 0; u8 pmr; if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */ @@ -178,13 +178,16 @@ static u32 sis_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg) pci_read_config_byte(pdev, SIS_PMR, &pmr); - pci_read_config_dword(pdev, cfg_addr, &val); + pci_read_config_dword(pdev, cfg_addr, val); if ((pdev->device == 0x0182) || (pdev->device == 0x0183) || (pdev->device == 0x1182) || (pmr & SIS_PMR_COMBINED)) pci_read_config_dword(pdev, cfg_addr+0x10, &val2); - return (val|val2) & 0xfffffffb; /* avoid problems with powerdowned ports */ + *val |= val2; + *val &= 0xfffffffb; /* avoid problems with powerdowned ports */ + + return 0; } static void sis_scr_cfg_write (struct ata_port *ap, unsigned int sc_reg, u32 val) @@ -214,7 +217,7 @@ static int sis_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val) return -EINVAL; if (ap->flags & SIS_FLAG_CFGSCR) - return sis_scr_cfg_read(ap, sc_reg); + return sis_scr_cfg_read(ap, sc_reg, val); pci_read_config_byte(pdev, SIS_PMR, &pmr);