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Staging: sep: ensure that caller id buffer is little endian 

Signed-off-by: Mark Allyn <mark.a.allyn@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Mark Allyn 2010-12-09 09:32:38 -08:00 committed by Greg Kroah-Hartman
parent c100fa4d61
commit 653bf0cfa5
2 changed files with 11 additions and 0 deletions
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8
drivers/staging/sep/sep_driver.c
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@ -897,6 +897,7 @@ end_function:
static int sep_set_current_caller_id(struct sep_device *sep)
{
int i;
u32 *hash_buf_ptr;
dev_dbg(&sep->pdev->dev, "sep_set_current_caller_id start\n");
dev_dbg(&sep->pdev->dev, "current process is %d\n", current->pid);
@ -915,6 +916,13 @@ static int sep_set_current_caller_id(struct sep_device *sep)
break;
}
}
/* Ensure data is in little endian */
hash_buf_ptr = (u32 *)sep->shared_addr +
SEP_CALLER_ID_OFFSET_BYTES;
for (i = 0; i < SEP_CALLER_ID_HASH_SIZE_IN_WORDS; i++)
hash_buf_ptr[i] = cpu_to_le32(hash_buf_ptr[i]);
dev_dbg(&sep->pdev->dev, "sep_set_current_caller_id end\n");
return 0;
}

3
drivers/staging/sep/sep_driver_config.h
View File

@ -201,6 +201,9 @@ held by the proccess (struct file) */
/* size of the caller id hash (sha2) */
#define SEP_CALLER_ID_HASH_SIZE_IN_BYTES 32
/* size of the caller id hash (sha2) in 32 bit words */
#define SEP_CALLER_ID_HASH_SIZE_IN_WORDS 8
/* maximum number of entries in the caller id table */
#define SEP_CALLER_ID_TABLE_NUM_ENTRIES 20