sdio: add modalias support

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

2 files changed, 40 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;
 }
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 8a09021d8c59..1e5d4d693195 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -484,6 +484,22 @@ static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
         return 1;
 }
 
+/* Looks like: sdio:cNvNdN. */
+static int do_sdio_entry(const char *filename,
+                        struct sdio_device_id *id, char *alias)
+{
+        id->class = TO_NATIVE(id->class);
+        id->vendor = TO_NATIVE(id->vendor);
+        id->device = TO_NATIVE(id->device);
+
+        strcpy(alias, "sdio:");
+        ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
+        ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
+        ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
+
+        return 1;
+}
+
 /* Ignore any prefix, eg. v850 prepends _ */
 static inline int sym_is(const char *symbol, const char *name)
 {
@@ -599,6 +615,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
                 do_table(symval, sym->st_size,
                          sizeof(struct parisc_device_id), "parisc",
                          do_parisc_entry, mod);
+        else if (sym_is(symname, "__mod_sdio_device_table"))
+                do_table(symval, sym->st_size,
+                         sizeof(struct sdio_device_id), "sdio",
+                         do_sdio_entry, mod);
 }
 
 /* Now add out buffered information to the generated C source */