diff options
| author |  William Zhang <william.zhang@broadcom.com>
| 2023-02-10 19:27:59 -0800 |
|---|---|---|
| committer |  Mark Brown <broonie@kernel.org>
| 2023-02-13 12:45:01 +0000 |
| commit | 2cca486cad4bf51da57cdad150697476a702ab69 (patch) | |
| tree | c4104b5ec264b8eb96975d487cc4a88f5d5773cf /drivers/spi/spi-bcmbca-hsspi.c | |
| parent | MAINTAINERS: Add entry for Broadcom Broadband SoC HS SPI drivers (diff) | |
| download | linux-2cca486cad4bf51da57cdad150697476a702ab69.tar.gz linux-2cca486cad4bf51da57cdad150697476a702ab69.tar.bz2 linux-2cca486cad4bf51da57cdad150697476a702ab69.zip | |
spi: bcm63xx-hsspi: bcmbca-hsspi: fix _be16 type usage
sparse tool report warnings: drivers/spi/spi-bcm63xx-hsspi.c:197:31:
sparse: sparse: cast from restricted __be16.
The controller requires big endian 16 bit data. Define an intermediate
u16 value and use __be16 piointer dereferncing for the data to avoid
directly casting to u16 and sparse warning.
Fixes: 85a84a616999 ("spi: bcm63xx-hsspi: Endianness fix for ARM based SoC")
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202302110438.sQwQnU54-lkp@intel.com/
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Link: https://lore.kernel.org/r/20230211032759.72967-1-william.zhang@broadcom.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-bcmbca-hsspi.c')
| -rw-r--r-- | drivers/spi/spi-bcmbca-hsspi.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/spi/spi-bcmbca-hsspi.c b/drivers/spi/spi-bcmbca-hsspi.c index d58033251c02..e255241319ab 100644 --- a/drivers/spi/spi-bcmbca-hsspi.c +++ b/drivers/spi/spi-bcmbca-hsspi.c @@ -252,7 +252,7 @@ static int bcmbca_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t, { struct bcmbca_hsspi *bs = spi_master_get_devdata(spi->master); unsigned int chip_select = spi->chip_select; - u16 opcode = 0; + u16 opcode = 0, val; int pending = t->len; int step_size = HSSPI_BUFFER_LEN; const u8 *tx = t->tx_buf; @@ -292,7 +292,9 @@ static int bcmbca_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t, memcpy_toio(bs->fifo + HSSPI_OPCODE_LEN, tx, curr_step); tx += curr_step; } - __raw_writew((u16)cpu_to_be16(opcode | curr_step), bs->fifo); + + *(__be16 *)(&val) = cpu_to_be16(opcode | curr_step); + __raw_writew(val, bs->fifo); /* enable interrupt */ if (bs->wait_mode == HSSPI_WAIT_MODE_INTR) |