From: Christian Lamparter <chunkeey@googlemail.com>
Date: Sat, 4 Dec 2010 21:39:39 +0000 (+0100)
Subject: carl9170 firmware: cleanup dma memory before reset
X-Git-Tag: 1.9.2~13
X-Git-Url: https://jxself.org/git/?a=commitdiff_plain;h=7ead3acecfdbd6f92bfd5b88909c9aa7edf03c47;p=carl9170fw.git

carl9170 firmware: cleanup dma memory before reset

While the documentation does not mention anything
in this regard. There's clearly some bootloader
action in the DMA memory region.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
---

diff --git a/carlfw/usb/main.c b/carlfw/usb/main.c
index fac3780..6545ec0 100644
--- a/carlfw/usb/main.c
+++ b/carlfw/usb/main.c
@@ -284,6 +284,9 @@ void __noreturn reboot(void)
 	/* Turn off power */
 	turn_power_off();
 
+	/* clean bootloader workspace */
+	memset(&dma_mem, 0, sizeof(dma_mem));
+
 	/* add by ygwei for work around USB PHY chirp sequence problem */
 	set(0x10f100, 0x12345678);