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authorLalit Chandivade <lalit.chandivade@qlogic.com>2009-01-22 12:45:33 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-01-25 08:57:26 -0500
commitad038fa8242a1f4547045f9213c3881a34bbcc21 (patch)
treeee514b3358f4fc4f5f8760ca477e0b0b979c28b6 /drivers/scsi
parenteaac30be268b90e9288b3945fb5cc9ee8c5397c0 (diff)
[SCSI] qla2xxx: Correct MSI-X vector allocation for single queue mode.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/qla2xxx/qla_isr.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 789fc576f222..e28ad81baf1e 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1868,6 +1868,7 @@ qla24xx_disable_msix(struct qla_hw_data *ha)
1868static int 1868static int
1869qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp) 1869qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
1870{ 1870{
1871#define MIN_MSIX_COUNT 2
1871 int i, ret; 1872 int i, ret;
1872 struct msix_entry *entries; 1873 struct msix_entry *entries;
1873 struct qla_msix_entry *qentry; 1874 struct qla_msix_entry *qentry;
@@ -1883,12 +1884,16 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
1883 1884
1884 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count); 1885 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1885 if (ret) { 1886 if (ret) {
1887 if (ret < MIN_MSIX_COUNT)
1888 goto msix_failed;
1889
1886 qla_printk(KERN_WARNING, ha, 1890 qla_printk(KERN_WARNING, ha,
1887 "MSI-X: Failed to enable support -- %d/%d\n" 1891 "MSI-X: Failed to enable support -- %d/%d\n"
1888 " Retry with %d vectors\n", ha->msix_count, ret, ret); 1892 " Retry with %d vectors\n", ha->msix_count, ret, ret);
1889 ha->msix_count = ret; 1893 ha->msix_count = ret;
1890 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count); 1894 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1891 if (ret) { 1895 if (ret) {
1896msix_failed:
1892 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable" 1897 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
1893 " support, giving up -- %d/%d\n", 1898 " support, giving up -- %d/%d\n",
1894 ha->msix_count, ret); 1899 ha->msix_count, ret);