| Message ID | 20181204122659.14720-3-vigneshr@ti.com |
|---|---|
| State | RFC |
| Delegated to: | Jagannadha Sutradharudu Teki |
| Headers | show |
| Series | SF: Migrate to Linux SPI NOR framework | expand |
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 1da20b8de5c4..4c1463118ab2 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -231,7 +231,13 @@ int spi_mem_exec_op(struct spi_slave *slave, const struct spi_mem_op *op) mutex_lock(&ctlr->bus_lock_mutex); mutex_lock(&ctlr->io_mutex); #endif + ret = spi_claim_bus(slave); + if (ret < 0) + return ret; + ret = ops->mem_ops->exec_op(slave, op); + + spi_release_bus(slave); #ifndef __UBOOT__ mutex_unlock(&ctlr->io_mutex); mutex_unlock(&ctlr->bus_lock_mutex);
It is necessary to call spi_claim_bus() before starting any SPI transactions and this restriction would also apply when calling spi-mem operationss. Therefore claim and release bus before requesting transfer via exec_op. Signed-off-by: Vignesh R <vigneshr@ti.com> --- drivers/spi/spi-mem.c | 6 ++++++ 1 file changed, 6 insertions(+)