UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drivers/scsi: remove unnecessary NULL test 

At the point where cmnd is initialized, it is tested for NULL, so it
doesn't have to be tested again here.

A simplified version of the semantic match that detects this problem is as
follows (http://coccinelle.lip6.fr/):

// <smpl>
@match exists@
expression x, E;
identifier fld;
@@

* x->fld
  ... when != \(x = E\|&x\)
* x == NULL
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Julia Lawall 2010-08-10 18:01:13 -07:00 committed by Linus Torvalds
parent 085267acd0
commit 95cc7baa7f
1 changed files with 0 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/scsi/initio.c
View File

@ -2817,7 +2817,6 @@ static void i91uSCBPost(u8 * host_mem, u8 * cblk_mem)
}
cmnd->result = cblk->tastat | (cblk->hastat << 16);
WARN_ON(cmnd == NULL);
i91u_unmap_scb(host->pci_dev, cmnd);
cmnd->scsi_done(cmnd); /* Notify system DONE */
initio_release_scb(host, cblk); /* Release SCB for current channel */