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MSI: Replace pci_msi_quirk with calls to pci_no_msi()

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I don't see any reason why we need pci_msi_quirk, quirk code can just
call pci_no_msi() instead.

Remove the check of pci_msi_quirk in msi_init(). This is safe as all
calls to msi_init() are protected by calls to pci_msi_supported(),
which checks pci_msi_enable, which is disabled by pci_no_msi().

The pci_disable_msi routines didn't check pci_msi_quirk, only
pci_msi_enable, but as far as I can see that was a bug not a feature.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Ellerman 2007-01-25 19:34:07 +11:00 committed by Greg Kroah-Hartman
parent 89298c7a41
commit 88187dfa4d
4 changed files with 4 additions and 19 deletions
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3
drivers/net/bnx2.c
View file

@ -5954,8 +5954,7 @@ bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
* responding after a while.
*
* AMD believes this incompatibility is unique to the 5706, and
* prefers to locally disable MSI rather than globally disabling it
* using pci_msi_quirk.
* prefers to locally disable MSI rather than globally disabling it.
*/
if (CHIP_NUM(bp) == CHIP_NUM_5706 && disable_msi == 0) {
struct pci_dev *amd_8132 = NULL;

7
drivers/pci/msi.c
View file

@ -170,13 +170,6 @@ static int msi_init(void)
if (!status)
return status;
if (pci_msi_quirk) {
pci_msi_enable = 0;
printk(KERN_WARNING "PCI: MSI quirk detected. MSI disabled.\n");
status = -EINVAL;
return status;
}
status = msi_cache_init();
if (status < 0) {
pci_msi_enable = 0;

6
drivers/pci/pci.h
View file

@ -43,12 +43,8 @@ extern void pci_remove_legacy_files(struct pci_bus *bus);
/* Lock for read/write access to pci device and bus lists */
extern struct rw_semaphore pci_bus_sem;
#ifdef CONFIG_PCI_MSI
extern int pci_msi_quirk;
#else
#define pci_msi_quirk 0
#endif
extern unsigned int pci_pm_d3_delay;
#ifdef CONFIG_PCI_MSI
void disable_msi_mode(struct pci_dev *dev, int pos, int type);
void pci_no_msi(void);

7
drivers/pci/quirks.c
View file

@ -1700,9 +1700,6 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
quirk_nvidia_ck804_pcie_aer_ext_cap);
#ifdef CONFIG_PCI_MSI
/* To disable MSI globally */
int pci_msi_quirk;
/* The Serverworks PCI-X chipset does not support MSI. We cannot easily rely
* on setting PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
* some other busses controlled by the chipset even if Linux is not aware of it.
@ -1711,8 +1708,8 @@ int pci_msi_quirk;
*/
static void __init quirk_svw_msi(struct pci_dev *dev)
{
pci_msi_quirk = 1;
printk(KERN_WARNING "PCI: MSI quirk detected. pci_msi_quirk set.\n");
pci_no_msi();
printk(KERN_WARNING "PCI: MSI quirk detected. MSI deactivated.\n");
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_svw_msi);