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spi: cf_spi: Use to_cf_spi_slave to resolve cfslave from slave

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Don't assume slave is always the first member of struct cf_spi_slave.
Use container_of instead of casting first structure member.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
This commit is contained in:
Axel Lin 2015-02-21 00:17:47 +08:00 committed by Jagannadha Sutradharudu Teki
parent 46122960f0
commit bb1662760e
1 changed files with 9 additions and 2 deletions
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11
drivers/spi/cf_spi.c
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@ -46,6 +46,11 @@ DECLARE_GLOBAL_DATA_PTR;
#define SPI_MODE_MOD 0x00200000
#define SPI_DBLRATE 0x00100000
static inline struct cf_spi_slave *to_cf_spi_slave(struct spi_slave *slave)
{
return container_of(slave, struct cf_spi_slave, slave);
}
void cfspi_init(void)
{
volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
@ -105,7 +110,7 @@ u16 cfspi_rx(void)
int cfspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout,
void *din, ulong flags)
{
struct cf_spi_slave *cfslave = (struct cf_spi_slave *)slave;
struct cf_spi_slave *cfslave = to_cf_spi_slave(slave);
u16 *spi_rd16 = NULL, *spi_wr16 = NULL;
u8 *spi_rd = NULL, *spi_wr = NULL;
static u32 ctrl = 0;
@ -326,7 +331,9 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
void spi_free_slave(struct spi_slave *slave)
{
free(slave);
struct cf_spi_slave *cfslave = to_cf_spi_slave(slave);
free(cfslave);
}
int spi_claim_bus(struct spi_slave *slave)