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 --- drivers/spi/cf_spi.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/cf_spi.c b/drivers/spi/cf_spi.c index 879a809..7453538 100644 --- a/drivers/spi/cf_spi.c +++ b/drivers/spi/cf_spi.c @@ -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)