spi: spidev: Replace ACPI specific code by device_get_match_data()

Instead of calling the ACPI specific APIs, use device_get_match_data().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220323140215.2568-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 889c400..efb9510 100644 (file)
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -8,19 +8,20 @@
  */
 
 #include <linux/init.h>
-#include <linux/module.h>
 #include <linux/ioctl.h>
 #include <linux/fs.h>
 #include <linux/device.h>
 #include <linux/err.h>
 #include <linux/list.h>
 #include <linux/errno.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/compat.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/acpi.h>
 
 #include <linux/spi/spi.h>
 #include <linux/spi/spidev.h>
@@ -709,10 +710,12 @@ static const struct of_device_id spidev_dt_ids[] = {
 MODULE_DEVICE_TABLE(of, spidev_dt_ids);
 #endif
 
-#ifdef CONFIG_ACPI
-
 /* Dummy SPI devices not to be used in production systems */
-#define SPIDEV_ACPI_DUMMY      1
+static int spidev_acpi_check(struct device *dev)
+{
+       dev_warn(dev, "do not use this driver in production systems!\n");
+       return 0;
+}
 
 static const struct acpi_device_id spidev_acpi_ids[] = {
        /*
@@ -721,35 +724,18 @@ static const struct acpi_device_id spidev_acpi_ids[] = {
         * description of the connected peripheral and they should also use
         * a proper driver instead of poking directly to the SPI bus.
         */
-       { "SPT0001", SPIDEV_ACPI_DUMMY },
-       { "SPT0002", SPIDEV_ACPI_DUMMY },
-       { "SPT0003", SPIDEV_ACPI_DUMMY },
+       { "SPT0001", (kernel_ulong_t)&spidev_acpi_check },
+       { "SPT0002", (kernel_ulong_t)&spidev_acpi_check },
+       { "SPT0003", (kernel_ulong_t)&spidev_acpi_check },
        {},
 };
 MODULE_DEVICE_TABLE(acpi, spidev_acpi_ids);
 
-static void spidev_probe_acpi(struct spi_device *spi)
-{
-       const struct acpi_device_id *id;
-
-       if (!has_acpi_companion(&spi->dev))
-               return;
-
-       id = acpi_match_device(spidev_acpi_ids, &spi->dev);
-       if (WARN_ON(!id))
-               return;
-
-       if (id->driver_data == SPIDEV_ACPI_DUMMY)
-               dev_warn(&spi->dev, "do not use this driver in production systems!\n");
-}
-#else
-static inline void spidev_probe_acpi(struct spi_device *spi) {}
-#endif
-
 /*-------------------------------------------------------------------------*/
 
 static int spidev_probe(struct spi_device *spi)
 {
+       int (*match)(struct device *dev);
        struct spidev_data      *spidev;
        int                     status;
        unsigned long           minor;
@@ -764,7 +750,12 @@ static int spidev_probe(struct spi_device *spi)
                return -EINVAL;
        }
 
-       spidev_probe_acpi(spi);
+       match = device_get_match_data(&spi->dev);
+       if (match) {
+               status = match(&spi->dev);
+               if (status)
+                       return status;
+       }
 
        /* Allocate driver data */
        spidev = kzalloc(sizeof(*spidev), GFP_KERNEL);
@@ -834,7 +825,7 @@ static struct spi_driver spidev_spi_driver = {
        .driver = {
                .name =         "spidev",
                .of_match_table = of_match_ptr(spidev_dt_ids),
-               .acpi_match_table = ACPI_PTR(spidev_acpi_ids),
+               .acpi_match_table = spidev_acpi_ids,
        },
        .probe =        spidev_probe,
        .remove =       spidev_remove,