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mtd: spi-nor: fix a memory leak bug

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In spi_nor_parse_4bait(), 'dwords' is allocated through kmalloc(). However,
it is not deallocated in the following execution if spi_nor_read_sfdp()
fails, leading to a memory leak. To fix this issue, free 'dwords' before
returning the error.

Fixes: 816873eaee ("mtd: spi-nor: parse SFDP 4-byte Address Instruction Table")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
This commit is contained in:
Wenwen Wang 2019-08-19 12:16:00 -05:00 committed by Tudor Ambarus
parent 3e9e38d918
commit 313aca5a9c
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1 changed files with 1 additions and 1 deletions
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drivers/mtd/spi-nor/spi-nor.c
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@ -3957,7 +3957,7 @@ static int spi_nor_parse_4bait(struct spi_nor *nor,
addr = SFDP_PARAM_HEADER_PTP(param_header);
ret = spi_nor_read_sfdp(nor, addr, len, dwords);
if (ret)
return ret;
goto out;
/* Fix endianness of the 4BAIT DWORDs. */
for (i = 0; i < SFDP_4BAIT_DWORD_MAX; i++)