From: Pete Zaitcev <zaitcev@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: zaitcev@redhat.com
Subject: Patch for shared interrupts in PCI IDE
Date: Fri, 4 May 2001 02:23:15 -0400 [thread overview]
Message-ID: <20010504022315.C4441@devserv.devel.redhat.com> (raw)
One of our customers has a Fujitsu laptop, poor thing...
It shares IRQ10 between Eepro, additional IDE for CD-ROM (CMD646),
and USB controllers. I talked this over with DaveM briefly,
and if I understood him right, something like the attached
patch may be in order. Anyone cares to comment?
Thank you,
-- Pete
diff -ur -X dontdiff linux-2.4.4/include/linux/ide.h linux-2.4.4-niph/include/linux/ide.h
--- linux-2.4.4/include/linux/ide.h Fri Apr 27 15:48:56 2001
+++ linux-2.4.4-niph/include/linux/ide.h Thu May 3 23:03:27 2001
@@ -408,6 +408,10 @@
ide_pmac
} hwif_chipset_t;
+#define IDE_CHIPSET_PCI_MASK \
+ ((1<<ide_pci)|(1<<ide_cmd646)|(1<<ide_ali14xx))
+#define IDE_CHIPSET_IS_PCI(c) ((IDE_CHIPSET_PCI_MASK >> (c)) & 1)
+
#ifdef CONFIG_BLK_DEV_IDEPCI
typedef struct ide_pci_devid_s {
unsigned short vid;
diff -ur -X dontdiff linux-2.4.4/drivers/ide/ide-probe.c linux-2.4.4-niph/drivers/ide/ide-probe.c
--- linux-2.4.4/drivers/ide/ide-probe.c Sun Mar 18 09:25:02 2001
+++ linux-2.4.4-niph/drivers/ide/ide-probe.c Thu May 3 23:07:37 2001
@@ -681,9 +681,9 @@
*/
if (!match || match->irq != hwif->irq) {
#ifdef CONFIG_IDEPCI_SHARE_IRQ
- int sa = (hwif->chipset == ide_pci) ? SA_SHIRQ : SA_INTERRUPT;
+ int sa = IDE_CHIPSET_IS_PCI(hwif->chipset) ? SA_SHIRQ : SA_INTERRUPT;
#else /* !CONFIG_IDEPCI_SHARE_IRQ */
- int sa = (hwif->chipset == ide_pci) ? SA_INTERRUPT|SA_SHIRQ : SA_INTERRUPT;
+ int sa = IDE_CHIPSET_IS_PCI(hwif->chipset) ? SA_INTERRUPT|SA_SHIRQ : SA_INTERRUPT;
#endif /* CONFIG_IDEPCI_SHARE_IRQ */
if (ide_request_irq(hwif->irq, &ide_intr, sa, hwif->name, hwgroup)) {
if (!match)
reply other threads:[~2001-05-04 6:23 UTC|newest]
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