sdio: add modalias support

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 20 insertions, 1 deletions

diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index a3a89e973d94..c834f5150888 100644
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -68,7 +68,26 @@ static int
 sdio_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf,
                 int buf_size)
 {
-        envp[0] = NULL;
+        struct sdio_func *func = dev_to_sdio_func(dev);
+        int i = 0, length = 0;
+
+        if (add_uevent_var(envp, num_envp, &i,
+                        buf, buf_size, &length,
+                        "SDIO_CLASS=%02X", func->class))
+                return -ENOMEM;
+
+        if (add_uevent_var(envp, num_envp, &i,
+                        buf, buf_size, &length,
+                        "SDIO_ID=%04X:%04X", func->vendor, func->device))
+                return -ENOMEM;
+
+        if (add_uevent_var(envp, num_envp, &i,
+                        buf, buf_size, &length,
+                        "MODALIAS=sdio:c%02Xv%04Xd%04X",
+                        func->class, func->vendor, func->device))
+                return -ENOMEM;
+
+        envp[i] = NULL;
 
         return 0;
 }