V4L/DVB (11172): pvrusb2: Cause overall initialization to fail if sub-driver(s) fail

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 74b365f1cfd20aaf1042f7b24540177c6b3f81f0..2f9667e62bb17d919362fb752a108be014ff698f 100644 (file)
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -1974,8 +1974,8 @@ static unsigned int pvr2_copy_i2c_addr_list(
 }
 
 
-static void pvr2_hdw_load_subdev(struct pvr2_hdw *hdw,
-                                const struct pvr2_device_client_desc *cd)
+static int pvr2_hdw_load_subdev(struct pvr2_hdw *hdw,
+                               const struct pvr2_device_client_desc *cd)
 {
        const char *fname;
        unsigned char mid;
@@ -1989,11 +1989,10 @@ static void pvr2_hdw_load_subdev(struct pvr2_hdw *hdw,
        fname = (mid < ARRAY_SIZE(module_names)) ? module_names[mid] : NULL;
        if (!fname) {
                pvr2_trace(PVR2_TRACE_ERROR_LEGS,
-                          "Module ID %u for device %s is unknown"
-                          " (this is probably a bad thing...)",
+                          "Module ID %u for device %s has no name",
                           mid,
                           hdw->hdw_desc->description);
-               return;
+               return -EINVAL;
        }
 
        i2ccnt = pvr2_copy_i2c_addr_list(i2caddr, cd->i2c_address_list,
@@ -2007,11 +2006,10 @@ static void pvr2_hdw_load_subdev(struct pvr2_hdw *hdw,
 
        if (!i2ccnt) {
                pvr2_trace(PVR2_TRACE_ERROR_LEGS,
-                          "Module ID %u for device %s:"
-                          " No i2c addresses"
-                          " (this is probably a bad thing...)",
-                          mid, hdw->hdw_desc->description);
-               return;
+                          "Module ID %u (%s) for device %s:"
+                          " No i2c addresses",
+                          mid, fname, hdw->hdw_desc->description);
+               return -EINVAL;
        }
 
        /* Note how the 2nd and 3rd arguments are the same for both
@@ -2033,10 +2031,9 @@ static void pvr2_hdw_load_subdev(struct pvr2_hdw *hdw,
 
        if (!sd) {
                pvr2_trace(PVR2_TRACE_ERROR_LEGS,
-                          "Module ID %u for device %s failed to load"
-                          " (this is probably a bad thing...)",
-                          mid, hdw->hdw_desc->description);
-               return;
+                          "Module ID %u (%s) for device %s failed to load",
+                          mid, fname, hdw->hdw_desc->description);
+               return -EIO;
        }
 
        /* Tag this sub-device instance with the module ID we know about.
@@ -2080,6 +2077,8 @@ static void pvr2_hdw_load_subdev(struct pvr2_hdw *hdw,
                break;
        default: break;
        }
+
+       return 0;
 }
 
 
@@ -2088,6 +2087,7 @@ static void pvr2_hdw_load_modules(struct pvr2_hdw *hdw)
        unsigned int idx;
        const struct pvr2_string_table *cm;
        const struct pvr2_device_client_table *ct;
+       int okFl = !0;
 
        cm = &hdw->hdw_desc->client_modules;
        for (idx = 0; idx < cm->cnt; idx++) {
@@ -2096,8 +2096,9 @@ static void pvr2_hdw_load_modules(struct pvr2_hdw *hdw)
 
        ct = &hdw->hdw_desc->client_table;
        for (idx = 0; idx < ct->cnt; idx++) {
-               pvr2_hdw_load_subdev(hdw,&ct->lst[idx]);
+               if (!pvr2_hdw_load_subdev(hdw, &ct->lst[idx])) okFl = 0;
        }
+       if (!okFl) pvr2_hdw_render_useless(hdw);
 }
 
 
@@ -2159,6 +2160,7 @@ static void pvr2_hdw_setup_low(struct pvr2_hdw *hdw)
        if (!pvr2_hdw_dev_ok(hdw)) return;
 
        pvr2_hdw_load_modules(hdw);
+       if (!pvr2_hdw_dev_ok(hdw)) return;
 
        for (idx = 0; idx < CTRLDEF_COUNT; idx++) {
                cptr = hdw->controls + idx;