MLK-21879-2 spi-mem: Fix read data size issue
When slave drivers not set the max_read_size, the spi-mem should directly
use data.nbytes and not limit to any size. But current logic will limit to
the max_write_size.
Signed-off-by: Ye Li <ye.li@nxp.com>
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index 1bb0987..195bc8d 100644
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -423,12 +423,14 @@
if (slave->max_write_size && len > slave->max_write_size)
return -EINVAL;
- if (op->data.dir == SPI_MEM_DATA_IN && slave->max_read_size)
- op->data.nbytes = min(op->data.nbytes,
+ if (op->data.dir == SPI_MEM_DATA_IN) {
+ if (slave->max_read_size)
+ op->data.nbytes = min(op->data.nbytes,
slave->max_read_size);
- else if (slave->max_write_size)
+ } else if (slave->max_write_size) {
op->data.nbytes = min(op->data.nbytes,
slave->max_write_size - len);
+ }
if (!op->data.nbytes)
return -EINVAL;
