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[SCSI] megaraid_sas: fix 64 bit sense pointer truncation

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The current sense pointer is cast to a u32 pointer, which can truncate
on 64 bits.  Fix by using unsigned long instead.

Signed-off-by Bo Yang<bo.yang@lsi.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Yang, Bo 2009-10-06 14:52:20 -06:00 committed by James Bottomley
parent 7e8a75f4df
commit 7b2519afa1
1 changed files with 4 additions and 4 deletions
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8
drivers/scsi/megaraid/megaraid_sas.c
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@ -3515,7 +3515,7 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
int error = 0, i; int error = 0, i;
void *sense = NULL; void *sense = NULL;
dma_addr_t sense_handle; dma_addr_t sense_handle;
u32 *sense_ptr; unsigned long *sense_ptr;
memset(kbuff_arr, 0, sizeof(kbuff_arr)); memset(kbuff_arr, 0, sizeof(kbuff_arr));
@ -3593,7 +3593,7 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
} }
sense_ptr = sense_ptr =
(u32 *) ((unsigned long)cmd->frame + ioc->sense_off); (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
*sense_ptr = sense_handle; *sense_ptr = sense_handle;
} }
@ -3624,8 +3624,8 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
* sense_ptr points to the location that has the user * sense_ptr points to the location that has the user
* sense buffer address * sense buffer address
*/ */
sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw + sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
ioc->sense_off); ioc->sense_off);
if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
sense, ioc->sense_len)) { sense, ioc->sense_len)) {