mmc: sdio: Extend sdio_config_attr macro and use it also for modalias

This simplify code for generating sdio config attributes and allows easily
define new sdio attributes.

Signed-off-by: Pali Rohár <pali@kernel.org>
Link: https://lore.kernel.org/r/20200727133837.19086-4-pali@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index 3cc9282..2384829 100644 (file)
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -28,29 +28,21 @@
 #define to_sdio_driver(d)      container_of(d, struct sdio_driver, drv)
 
 /* show configuration fields */
-#define sdio_config_attr(field, format_string)                         \
+#define sdio_config_attr(field, format_string, args...)                        \
 static ssize_t                                                         \
 field##_show(struct device *dev, struct device_attribute *attr, char *buf)                             \
 {                                                                      \
        struct sdio_func *func;                                         \
                                                                        \
        func = dev_to_sdio_func (dev);                                  \
-       return sprintf (buf, format_string, func->field);               \
+       return sprintf(buf, format_string, args);                       \
 }                                                                      \
 static DEVICE_ATTR_RO(field)
 
-sdio_config_attr(class, "0x%02x\n");
-sdio_config_attr(vendor, "0x%04x\n");
-sdio_config_attr(device, "0x%04x\n");
-
-static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
-{
-       struct sdio_func *func = dev_to_sdio_func (dev);
-
-       return sprintf(buf, "sdio:c%02Xv%04Xd%04X\n",
-                       func->class, func->vendor, func->device);
-}
-static DEVICE_ATTR_RO(modalias);
+sdio_config_attr(class, "0x%02x\n", func->class);
+sdio_config_attr(vendor, "0x%04x\n", func->vendor);
+sdio_config_attr(device, "0x%04x\n", func->device);
+sdio_config_attr(modalias, "sdio:c%02Xv%04Xd%04X\n", func->class, func->vendor, func->device);
 
 static struct attribute *sdio_dev_attrs[] = {
        &dev_attr_class.attr,