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[SCSI] drivers/scsi/sr_ioctl.c: check for failed allocation 

I noticed a case in sr_ioctl.c's sr_get_mcn where a buffer is
allocated, but the pointer isn't checked for null.

Signed-off-by: Nate Dailey <nate.dailey@stratus.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Nate Dailey 2005-04-21 16:14:05 -04:00 committed by James Bottomley
parent 0bdcd78ea2
commit 3a73e8c771
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/sr_ioctl.c
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@ -281,6 +281,9 @@ int sr_get_mcn(struct cdrom_device_info *cdi, struct cdrom_mcn *mcn)
char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
int result;
if (!buffer)
return -ENOMEM;
memset(&cgc, 0, sizeof(struct packet_command));
cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
cgc.cmd[2] = 0x40; /* I do want the subchannel info */