1 files changed, 41 insertions, 13 deletions

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 16ab280359bd..806e34c19281 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -2088,11 +2088,18 @@ static void b43_print_fw_helptext(struct b43_wl *wl, bool error)
                 b43warn(wl, text);
 }
 
+static void b43_fw_cb(const struct firmware *firmware, void *context)
+{
+        struct b43_request_fw_context *ctx = context;
+
+        ctx->blob = firmware;
+        complete(&ctx->fw_load_complete);
+}
+
 int b43_do_request_fw(struct b43_request_fw_context *ctx,
                       const char *name,
-                      struct b43_firmware_file *fw)
+                      struct b43_firmware_file *fw, bool async)
 {
-        const struct firmware *blob;
         struct b43_fw_header *hdr;
         u32 size;
         int err;
@@ -2131,11 +2138,31 @@ int b43_do_request_fw(struct b43_request_fw_context *ctx,
                 B43_WARN_ON(1);
                 return -ENOSYS;
         }
-        err = request_firmware(&blob, ctx->fwname, ctx->dev->dev->dev);
+        if (async) {
+                /* do this part asynchronously */
+                init_completion(&ctx->fw_load_complete);
+                err = request_firmware_nowait(THIS_MODULE, 1, ctx->fwname,
+                                              ctx->dev->dev->dev, GFP_KERNEL,
+                                              ctx, b43_fw_cb);
+                if (err < 0) {
+                        pr_err("Unable to load firmware\n");
+                        return err;
+                }
+                /* stall here until fw ready */
+                wait_for_completion(&ctx->fw_load_complete);
+                if (ctx->blob)
+                        goto fw_ready;
+        /* On some ARM systems, the async request will fail, but the next sync
+         * request works. For this reason, we dall through here
+         */
+        }
+        err = request_firmware(&ctx->blob, ctx->fwname,
+                               ctx->dev->dev->dev);
         if (err == -ENOENT) {
                 snprintf(ctx->errors[ctx->req_type],
                          sizeof(ctx->errors[ctx->req_type]),
-                         "Firmware file \"%s\" not found\n", ctx->fwname);
+                         "Firmware file \"%s\" not found\n",
+                         ctx->fwname);
                 return err;
         } else if (err) {
                 snprintf(ctx->errors[ctx->req_type],
@@ -2144,14 +2171,15 @@ int b43_do_request_fw(struct b43_request_fw_context *ctx,
                          ctx->fwname, err);
                 return err;
         }
-        if (blob->size < sizeof(struct b43_fw_header))
+fw_ready:
+        if (ctx->blob->size < sizeof(struct b43_fw_header))
                 goto err_format;
-        hdr = (struct b43_fw_header *)(blob->data);
+        hdr = (struct b43_fw_header *)(ctx->blob->data);
         switch (hdr->type) {
         case B43_FW_TYPE_UCODE:
         case B43_FW_TYPE_PCM:
                 size = be32_to_cpu(hdr->size);
-                if (size != blob->size - sizeof(struct b43_fw_header))
+                if (size != ctx->blob->size - sizeof(struct b43_fw_header))
                         goto err_format;
                 /* fallthrough */
         case B43_FW_TYPE_IV:
@@ -2162,7 +2190,7 @@ int b43_do_request_fw(struct b43_request_fw_context *ctx,
                 goto err_format;
         }
 
-        fw->data = blob;
+        fw->data = ctx->blob;
         fw->filename = name;
         fw->type = ctx->req_type;
 
@@ -2172,7 +2200,7 @@ err_format:
         snprintf(ctx->errors[ctx->req_type],
                  sizeof(ctx->errors[ctx->req_type]),
                  "Firmware file \"%s\" format error.\n", ctx->fwname);
-        release_firmware(blob);
+        release_firmware(ctx->blob);
 
         return -EPROTO;
 }
@@ -2223,7 +2251,7 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
                         goto err_no_ucode;
                 }
         }
-        err = b43_do_request_fw(ctx, filename, &fw->ucode);
+        err = b43_do_request_fw(ctx, filename, &fw->ucode, true);
         if (err)
                 goto err_load;
 
@@ -2235,7 +2263,7 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
         else
                 goto err_no_pcm;
         fw->pcm_request_failed = false;
-        err = b43_do_request_fw(ctx, filename, &fw->pcm);
+        err = b43_do_request_fw(ctx, filename, &fw->pcm, false);
         if (err == -ENOENT) {
                 /* We did not find a PCM file? Not fatal, but
                  * core rev <= 10 must do without hwcrypto then. */
@@ -2296,7 +2324,7 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
         default:
                 goto err_no_initvals;
         }
-        err = b43_do_request_fw(ctx, filename, &fw->initvals);
+        err = b43_do_request_fw(ctx, filename, &fw->initvals, false);
         if (err)
                 goto err_load;
 
@@ -2355,7 +2383,7 @@ static int b43_try_request_fw(struct b43_request_fw_context *ctx)
         default:
                 goto err_no_initvals;
         }
-        err = b43_do_request_fw(ctx, filename, &fw->initvals_band);
+        err = b43_do_request_fw(ctx, filename, &fw->initvals_band, false);
         if (err)
                 goto err_load;