From: Alan Cox Date: Fri, 2 Mar 2007 14:56:35 +0000 (+0000) Subject: pata_qdi: Fix initialisation X-Git-Tag: v2.6.21-rc3~129^2~3 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc7c15ec167767b440c1de4dbd2200467b7a493b;p=linux-2.6 pata_qdi: Fix initialisation The QDI init code contains some bugs which mean it only works if you have a test setup that causes both a successful and failed probe. Fix this Found by Philip Guo (Who found it working on code analysis tools not running VLB IDE controllers) Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c index c2f87da603..c3810012f3 100644 --- a/drivers/ata/pata_qdi.c +++ b/drivers/ata/pata_qdi.c @@ -363,7 +363,8 @@ static __init int qdi_init(void) release_region(port, 2); continue; } - ct += qdi_init_one(port, 6500, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04); + if (qdi_init_one(port, 6500, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04) == 0) + ct++; } if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) { /* QD6580: dual channel */ @@ -375,11 +376,14 @@ static __init int qdi_init(void) res = inb(port + 3); if (res & 1) { /* Single channel mode */ - ct += qdi_init_one(port, 6580, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04); + if (qdi_init_one(port, 6580, ide_port[r & 0x01], ide_irq[r & 0x01], r & 0x04)) + ct++; } else { /* Dual channel mode */ - ct += qdi_init_one(port, 6580, 0x1F0, 14, r & 0x04); - ct += qdi_init_one(port + 2, 6580, 0x170, 15, r & 0x04); + if (qdi_init_one(port, 6580, 0x1F0, 14, r & 0x04) == 0) + ct++; + if (qdi_init_one(port + 2, 6580, 0x170, 15, r & 0x04) == 0) + ct++; } } }