From: Mark Allyn Date: Thu, 9 Dec 2010 17:32:38 +0000 (-0800) Subject: Staging: sep: ensure that caller id buffer is little endian X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=653bf0cfa55896b74d8cbe7e561401813ca359ad;p=linux-beck.git Staging: sep: ensure that caller id buffer is little endian Signed-off-by: Mark Allyn Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/sep/sep_driver.c b/drivers/staging/sep/sep_driver.c index 903d6106c0d3..bb42b048f46a 100644 --- a/drivers/staging/sep/sep_driver.c +++ b/drivers/staging/sep/sep_driver.c @@ -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; } diff --git a/drivers/staging/sep/sep_driver_config.h b/drivers/staging/sep/sep_driver_config.h index 92338c0f6bd2..b18625d2f7f4 100644 --- a/drivers/staging/sep/sep_driver_config.h +++ b/drivers/staging/sep/sep_driver_config.h @@ -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