diff options
| author | Julia Lawall <julia@diku.dk> | 2011-07-11 14:08:25 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-07-27 17:45:08 +0400 |
| commit | f170c684b55cb8d3bab55b1fb8fa812778d551f2 (patch) | |
| tree | 1a6c2a6374e0463401a6219961c5b348c55f9d70 | |
| parent | b5b515445f4f5a905c5dd27e6e682868ccd6c09d (diff) | |
[SCSI] ipr: reorder error handling code to include iounmap
The out_msi_disable label should be before cleanup_nomem to additionally
benefit from the call to iounmap. Subsequent gotos are adjusted to go to
out_msi_disable instead of cleanup_nomem, which now follows it. This is
safe because pci_disable_msi does nothing if pci_enable_msi was not called.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r@
expression e1,e2;
statement S;
@@
e1 = pci_ioremap_bar(...);
... when != e1 = e2
when != iounmap(e1)
when any
(
if (<+...e1...+>) S
|
if(...) { ... return 0; }
|
if (...) { ... when != iounmap(e1)
when != if (...) { ... iounmap(e1) ... }
* return ...;
} else S
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| -rw-r--r-- | drivers/scsi/ipr.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 888086c4e709..8d636301e32c 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -8778,14 +8778,14 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev, if (rc != PCIBIOS_SUCCESSFUL) { dev_err(&pdev->dev, "Failed to save PCI config space\n"); rc = -EIO; - goto cleanup_nomem; + goto out_msi_disable; } if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg))) - goto cleanup_nomem; + goto out_msi_disable; if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg))) - goto cleanup_nomem; + goto out_msi_disable; if (ioa_cfg->sis64) ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64) @@ -8800,7 +8800,7 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev, if (rc < 0) { dev_err(&pdev->dev, "Couldn't allocate enough memory for device driver!\n"); - goto cleanup_nomem; + goto out_msi_disable; } /* @@ -8845,10 +8845,10 @@ out: cleanup_nolog: ipr_free_mem(ioa_cfg); -cleanup_nomem: - iounmap(ipr_regs); out_msi_disable: pci_disable_msi(pdev); +cleanup_nomem: + iounmap(ipr_regs); out_release_regions: pci_release_regions(pdev); out_scsi_host_put: |