spi: don't check spi_controller::num_chipselect when parsing a dt device

Do not validate spi_controller::num_chipselect against SPI_CS_CNT_MAX
when parsing an spi device firmware node.

Firstly this is the wrong place, and this should be done while
registering/validating the controller. Secondly, there is no reason for
that check, as SPI_CS_CNT_MAX controls the amount of chipselects a
device may have, not a controller may have.

So drop that check as it needlessly limits controllers to SPI_CS_CNT_MAX
number of chipselects.

Likewise, drop the check for number of device chipselects larger than
controller's number of chipselects, as __spi_add_device() will already
catch that as either one of the chip selects will be out of range, or
there is a duplicate one.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Link: https://patch.msgid.link/20250915183725.219473-6-jonas.gorski@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 91e2f4f504e88e70b4c5fb7e7975bdeda5a81f2c..2eb361e9e44d0f7620636361f77dc8ad85e35255 100644 (file)
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2427,11 +2427,6 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
                return 0;
        }
 
-       if (ctlr->num_chipselect > SPI_CS_CNT_MAX) {
-               dev_err(&ctlr->dev, "No. of CS is more than max. no. of supported CS\n");
-               return -EINVAL;
-       }
-
        /* Device address */
        rc = of_property_read_variable_u32_array(nc, "reg", &cs[0], 1,
                                                 SPI_CS_CNT_MAX);
@@ -2440,11 +2435,7 @@ static int of_spi_parse_dt(struct spi_controller *ctlr, struct spi_device *spi,
                        nc, rc);
                return rc;
        }
-       if (rc > ctlr->num_chipselect) {
-               dev_err(&ctlr->dev, "%pOF has number of CS > ctlr->num_chipselect (%d)\n",
-                       nc, rc);
-               return -EINVAL;
-       }
+
        if ((of_property_present(nc, "parallel-memories")) &&
            (!(ctlr->flags & SPI_CONTROLLER_MULTI_CS))) {
                dev_err(&ctlr->dev, "SPI controller doesn't support multi CS\n");