提交 ceadfd8d 编写于 作者: B Bhuvanchandra DV 提交者: Mark Brown

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: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NBhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Signed-off-by: NMark Brown <broonie@kernel.org>
上级 9298bc72
......@@ -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;
......
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