Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-16 09:02:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

PCI MSI: always toggle legacy-INTx-enable bit upon MSI entry/exit

Browse Source 
The current code (prior to this change) would disable the PCI INTx
legacy interrupt when enabling MSI... but only on PCI Express.  We
should do this for all MSI devices, for safety's sake.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jeff Garzik 2006-12-07 17:56:06 -05:00
parent ff51a98799
commit 1769b46a3e
1 changed files with 4 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/pci/msi.c
View File

@ -255,10 +255,8 @@ static void enable_msi_mode(struct pci_dev *dev, int pos, int type)
pci_write_config_word(dev, msi_control_reg(pos), control);
dev->msix_enabled = 1;
}
if (pci_find_capability(dev, PCI_CAP_ID_EXP)) {
/* PCI Express Endpoint device detected */
pci_intx(dev, 0); /* disable intx */
}
pci_intx(dev, 0); /* disable intx */
}
void disable_msi_mode(struct pci_dev *dev, int pos, int type)
@ -276,10 +274,8 @@ void disable_msi_mode(struct pci_dev *dev, int pos, int type)
pci_write_config_word(dev, msi_control_reg(pos), control);
dev->msix_enabled = 0;
}
if (pci_find_capability(dev, PCI_CAP_ID_EXP)) {
/* PCI Express Endpoint device detected */
pci_intx(dev, 1); /* enable intx */
}
pci_intx(dev, 1); /* enable intx */
}
static int msi_lookup_irq(struct pci_dev *dev, int type)