diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2017-04-20 16:05:13 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-04-20 16:05:13 +0200 |
| commit | 7a258ff04f9d5fe549fed6d03931a0236587047e (patch) | |
| tree | 6b164332c2a3983d972cc4dc47af3fce6cc5dc32 /drivers/scsi/sr.c | |
| parent | 382bd4de61827dbaaf5fb4fb7b1f4be4a86505e7 (diff) | |
| parent | f61143c45077df4fa78e2f1ba455a00bbe1d5b8c (diff) | |
| download | blackbird-obmc-linux-7a258ff04f9d5fe549fed6d03931a0236587047e.tar.gz blackbird-obmc-linux-7a258ff04f9d5fe549fed6d03931a0236587047e.zip | |
Merge branch 'linus' into irq/core
Pick up upstream fixes to avoid conflicts with pending patches.
Diffstat (limited to 'drivers/scsi/sr.c')
| -rw-r--r-- | drivers/scsi/sr.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 0b29b9329b1c..a8f630213a1a 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -836,6 +836,7 @@ static void get_capabilities(struct scsi_cd *cd) unsigned char *buffer; struct scsi_mode_data data; struct scsi_sense_hdr sshdr; + unsigned int ms_len = 128; int rc, n; static const char *loadmech[] = @@ -862,10 +863,11 @@ static void get_capabilities(struct scsi_cd *cd) scsi_test_unit_ready(cd->device, SR_TIMEOUT, MAX_RETRIES, &sshdr); /* ask for mode page 0x2a */ - rc = scsi_mode_sense(cd->device, 0, 0x2a, buffer, 128, + rc = scsi_mode_sense(cd->device, 0, 0x2a, buffer, ms_len, SR_TIMEOUT, 3, &data, NULL); - if (!scsi_status_is_good(rc)) { + if (!scsi_status_is_good(rc) || data.length > ms_len || + data.header_length + data.block_descriptor_length > data.length) { /* failed, drive doesn't have capabilities mode page */ cd->cdi.speed = 1; cd->cdi.mask |= (CDC_CD_R | CDC_CD_RW | CDC_DVD_R | |
