Staging: sep: ensure that caller id buffer is little endian (653bf0cf) · Commits · 戴 / test

drivers/staging/sep/sep_driver.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -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 −0

Original line number	Diff line number	Diff line
		@@ -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