spi: spi-mem: Compute length only when needed

When adjust_op_size is defined, len is never used. Move the len
computation where it's actually used.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20200228160735.1565047-1-tudor.ambarus@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index 3c46747bacb125af0aba05d16997bcff59ac889e..adaa0c49f966da97cebd5547449018d491bc9a59 100644 (file)
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -418,12 +418,13 @@ int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op)
        struct spi_controller *ctlr = mem->spi->controller;
        size_t len;
 
-       len = sizeof(op->cmd.opcode) + op->addr.nbytes + op->dummy.nbytes;
-
        if (ctlr->mem_ops && ctlr->mem_ops->adjust_op_size)
                return ctlr->mem_ops->adjust_op_size(mem, op);
 
        if (!ctlr->mem_ops || !ctlr->mem_ops->exec_op) {
+               len = sizeof(op->cmd.opcode) + op->addr.nbytes +
+                     op->dummy.nbytes;
+
                if (len > spi_max_transfer_size(mem->spi))
                        return -EINVAL;