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| author | Yang, Bo <Bo.Yang@lsi.com> | 2008-08-10 12:42:37 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-08-16 10:12:19 -0500 |
| commit | 06f579dee5dd75c2aaf8fe83d034b5470eeee2f4 (patch) | |
| tree | 57e96328d00390037f95a58e1225f1e2099e7bdc /drivers/scsi/megaraid | |
| parent | d211f052fa58a053639bc51501cb64421157d362 (diff) | |
| download | linux-06f579dee5dd75c2aaf8fe83d034b5470eeee2f4.tar.gz linux-06f579dee5dd75c2aaf8fe83d034b5470eeee2f4.tar.bz2 linux-06f579dee5dd75c2aaf8fe83d034b5470eeee2f4.zip | |
[SCSI] megaraid_sas: add readl to force PCI posting flush
MegaRAID SAS Driver get unexpected Interrupt. Add the dummy readl to
force PCI flush will fix this issue.
Signed-off-by: Bo Yang <bo.yang@lsi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/megaraid')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index fc7ac158476c..d7b99843ca3e 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -198,6 +198,9 @@ megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) */ writel(status, ®s->outbound_intr_status); + /* Dummy readl to force pci flush */ + readl(®s->outbound_intr_status); + return 0; } @@ -293,6 +296,9 @@ megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) */ writel(status, ®s->outbound_doorbell_clear); + /* Dummy readl to force pci flush */ + readl(®s->outbound_doorbell_clear); + return 0; } /** |