diff options
| -rw-r--r-- | drivers/scsi/scsi.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 2de5f3ad640b..b6e03074cb8f 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -994,7 +994,7 @@ static int scsi_vpd_inquiry(struct scsi_device *sdev, unsigned char *buffer, * all the existing users tried this hard. */ result = scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buffer, - len + 4, NULL, 30 * HZ, 3, NULL); + len, NULL, 30 * HZ, 3, NULL); if (result) return result; @@ -1021,13 +1021,14 @@ unsigned char *scsi_get_vpd_page(struct scsi_device *sdev, u8 page) { int i, result; unsigned int len; - unsigned char *buf = kmalloc(259, GFP_KERNEL); + const unsigned int init_vpd_len = 255; + unsigned char *buf = kmalloc(init_vpd_len, GFP_KERNEL); if (!buf) return NULL; /* Ask for all the pages supported by this device */ - result = scsi_vpd_inquiry(sdev, buf, 0, 255); + result = scsi_vpd_inquiry(sdev, buf, 0, init_vpd_len); if (result) goto fail; @@ -1050,12 +1051,12 @@ unsigned char *scsi_get_vpd_page(struct scsi_device *sdev, u8 page) * Some pages are longer than 255 bytes. The actual length of * the page is returned in the header. */ - len = (buf[2] << 8) | buf[3]; - if (len <= 255) + len = ((buf[2] << 8) | buf[3]) + 4; + if (len <= init_vpd_len) return buf; kfree(buf); - buf = kmalloc(len + 4, GFP_KERNEL); + buf = kmalloc(len, GFP_KERNEL); result = scsi_vpd_inquiry(sdev, buf, page, len); if (result) goto fail; |