From: Rafał Miłecki <zajec5@gmail.com>
Date: Tue, 8 Nov 2011 16:15:03 +0000 (+0100)
Subject: b43: refuse to load unsupported firmware
X-Git-Tag: v3.1.2~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=261a21ff99fb3cef1958b30e4456866ec4427b5b;p=thirdparty%2Fkernel%2Fstable.git

b43: refuse to load unsupported firmware

[This patch is supposed to be applied in 3.1 (and maybe older) branches only.]

New kernels support newer firmware that users may try to incorrectly use
with older kernels. Display error and explain the problem in such a case

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index e293a7921bf07..fdb4df2dd2adc 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -2508,6 +2508,13 @@ static int b43_upload_microcode(struct b43_wldev *dev)
 		b43_print_fw_helptext(dev->wl, 1);
 		err = -EOPNOTSUPP;
 		goto error;
+	} else if (fwrev >= 598) {
+		b43err(dev->wl, "YOUR FIRMWARE IS TOO NEW. Support for "
+		       "firmware 598 and up requires kernel 3.2 or newer. You "
+		       "have to install older firmware or upgrade kernel.\n");
+		b43_print_fw_helptext(dev->wl, 1);
+		err = -EOPNOTSUPP;
+		goto error;
 	}
 	dev->fw.rev = fwrev;
 	dev->fw.patch = fwpatch;