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[SCSI] megaraid_sas: Use correct #define for MSI-X capability 

Previously we used PCI_MSI_FLAGS to locate a register in the MSI-X
capability.  This did work because the MSI and MSI-X flags happen
to be at the same offsets, but was confusing.

PCI_MSIX_FLAGS_ENABLE is already defined in include/uapi/linux/pci_regs.h,
so no need to define it again.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Adam Radford <aradford@gmail.com>
This commit is contained in:
Bjorn Helgaas 2013-04-17 18:08:44 -06:00
parent f6161aa153
commit 9936906597
2 changed files with 2 additions and 5 deletions
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3
drivers/scsi/megaraid/megaraid_sas.h
View File

@ -1488,7 +1488,4 @@ struct megasas_mgmt_info {
int max_index;
};
#define msi_control_reg(base) (base + PCI_MSI_FLAGS)
#define PCI_MSIX_FLAGS_ENABLE (1 << 15)
#endif /*LSI_MEGARAID_SAS_H */

4
drivers/scsi/megaraid/megaraid_sas_base.c
View File

@ -3984,12 +3984,12 @@ static int megasas_probe_one(struct pci_dev *pdev,
if (reset_devices) {
pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
if (pos) {
pci_read_config_word(pdev, msi_control_reg(pos),
pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
&control);
if (control & PCI_MSIX_FLAGS_ENABLE) {
dev_info(&pdev->dev, "resetting MSI-X\n");
pci_write_config_word(pdev,
msi_control_reg(pos),
pos + PCI_MSIX_FLAGS,
control &
~PCI_MSIX_FLAGS_ENABLE);
}