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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: 85a84a6169 ("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>
This commit is contained in:
William Zhang 2023-02-10 19:27:59 -08:00 committed by Mark Brown
parent 80323599e3
commit 2cca486cad
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 10 additions and 6 deletions
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10
drivers/spi/spi-bcm63xx-hsspi.c
View File

@ -350,7 +350,7 @@ static int bcm63xx_hsspi_do_prepend_txrx(struct spi_device *spi,
{
struct bcm63xx_hsspi *bs = spi_master_get_devdata(spi->master);
unsigned int chip_select = spi->chip_select;
u16 opcode = 0;
u16 opcode = 0, val;
const u8 *tx = t->tx_buf;
u8 *rx = t->rx_buf;
u32 reg = 0;
@ -401,7 +401,8 @@ static int bcm63xx_hsspi_do_prepend_txrx(struct spi_device *spi,
memcpy_toio(bs->fifo + HSSPI_OPCODE_LEN + bs->prepend_cnt, tx,
t->len);
__raw_writew((u16)cpu_to_be16(opcode | t->len), bs->fifo);
*(__be16 *)(&val) = cpu_to_be16(opcode | t->len);
__raw_writew(val, bs->fifo);
/* enable interrupt */
if (bs->wait_mode == HSSPI_WAIT_MODE_INTR)
__raw_writel(HSSPI_PINGx_CMD_DONE(0), bs->regs + HSSPI_INT_MASK_REG);
@ -468,7 +469,7 @@ static int bcm63xx_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t)
{
struct bcm63xx_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;
@ -511,7 +512,8 @@ static int bcm63xx_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t)
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)

6
drivers/spi/spi-bcmbca-hsspi.c
View File

@ -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)