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authorBhuvanchandra DV <bhuvanchandra.dv@toradex.com>2015-01-31 22:03:25 +0530
committerMark Brown <broonie@kernel.org>2015-02-02 20:05:19 +0000
commitceadfd8de067e37d52e2af6bb60016cb90342fe8 (patch)
tree1b3a76f797f5425f1ad42eb23f2791f5e785a22f
parent9298bc727385cd625cdda5e877bd3cba8acff668 (diff)
spi: fsl-dspi: Remove possible memory leak of 'chip'
Move the check for spi->bits_per_word before allocation, to avoid memory leak. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--drivers/spi/spi-fsl-dspi.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index 2c52c2e185c7..d1a39249704a 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -347,6 +347,13 @@ static int dspi_setup(struct spi_device *spi)
struct fsl_dspi *dspi = spi_master_get_devdata(spi->master);
unsigned char br = 0, pbr = 0, fmsz = 0;
+ if ((spi->bits_per_word >= 4) && (spi->bits_per_word <= 16)) {
+ fmsz = spi->bits_per_word - 1;
+ } else {
+ pr_err("Invalid wordsize\n");
+ return -ENODEV;
+ }
+
/* Only alloc on first setup */
chip = spi_get_ctldata(spi);
if (chip == NULL) {
@@ -357,12 +364,6 @@ static int dspi_setup(struct spi_device *spi)
chip->mcr_val = SPI_MCR_MASTER | SPI_MCR_PCSIS |
SPI_MCR_CLR_TXF | SPI_MCR_CLR_RXF;
- if ((spi->bits_per_word >= 4) && (spi->bits_per_word <= 16)) {
- fmsz = spi->bits_per_word - 1;
- } else {
- pr_err("Invalid wordsize\n");
- return -ENODEV;
- }
chip->void_write_data = 0;