b43: Remove reset after fatal DMA error

commit 214ac9a4 upstream.

As shown in Kernel Bugzilla #14761, doing a controller restart after a
fatal DMA error does not accomplish anything other than consume the CPU
on an affected system. Accordingly, substitute a meaningful message for
the restart.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/net/wireless/b43/main.c

@@ -1788,7 +1788,10 @@ static void b43_do_interrupt_thread(struct b43_wldev *dev)
 			       dma_reason[0], dma_reason[1],
 			       dma_reason[2], dma_reason[3],
 			       dma_reason[4], dma_reason[5]);
-			b43_controller_restart(dev, "DMA error");
+			b43err(dev->wl, "This device does not support DMA "
+			       "on your system. Please use PIO instead.\n");
+			b43err(dev->wl, "CONFIG_B43_FORCE_PIO must be set in "
+			       "your kernel configuration.\n");
 			return;
 		}
 		if (merged_dma_reason & B43_DMAIRQ_NONFATALMASK) {