From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Mon, 20 Aug 2007 20:42:56 +0000 (+0200)
Subject: triflex: add missing ->dma_base check
X-Git-Tag: v2.6.23-rc4~102^2~2
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88b47040f8365ad56ecfd4103e964ba9b695987e;p=linux-2.6

triflex: add missing ->dma_base check

If ->dma_base is not set (== PCI BAR4 cannot be reserved) then DMA hooks
shouldn't be initialized or bad things will happen.

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

diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c
index 024bbfae04..098692a6d6 100644
--- a/drivers/ide/pci/triflex.c
+++ b/drivers/ide/pci/triflex.c
@@ -115,6 +115,9 @@ static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
 	hwif->tuneproc = &triflex_tune_drive;
 	hwif->speedproc = &triflex_tune_chipset;
 
+	if (hwif->dma_base == 0)
+		return;
+
 	hwif->atapi_dma  = 1;
 	hwif->mwdma_mask = 0x07;
 	hwif->swdma_mask = 0x07;