commit 1c54a93d4de34c87be9c63fe5094157e10995d6b
author Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Tue Oct 16 22:29:56 2007 +0200
committer Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Tue Oct 16 22:29:56 2007 +0200
tree 9da94f64f4d432ca222547f555c9c1bb10bf2e25
parent 3135469e1f679b1728fa047ed43b0c63cdf50c84

it8213/piix/slc90e66: "de-couple" PIO and UDMA modes

Don't force PIO4 when programming UDMA mode (suggested by Sergei).

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/pci/it8213.c

diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index 069152d..2102167 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -93,7 +93,7 @@
 	int w_flag		= 0x10 << drive->dn;
 	int u_speed		= 0;
 	u16			reg4042, reg4a;
-	u8			reg48, reg54, reg55, pio;
+	u8			reg48, reg54, reg55;
 
 	pci_read_config_word(dev, maslave, &reg4042);
 	pci_read_config_byte(dev, 0x48, &reg48);
@@ -134,10 +134,9 @@
 				pci_write_config_byte(dev, 0x54, reg54 | v_flag);
 		} else
 			pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
-
-		pio = 4;
 	} else {
 		const u8 mwdma_to_pio[] = { 0, 3, 4 };
+		u8 pio;
 
 		if (reg48 & u_flag)
 			pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
@@ -152,9 +151,9 @@
 			pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
 		else
 			pio = 2; /* only SWDMA2 is allowed */
-	}
 
-	it8213_set_pio_mode(drive, pio);
+		it8213_set_pio_mode(drive, pio);
+	}
 }
 
 /**