#17839: Reboot command causes sometimes hanging router with TL-WDR3600 (HW V1.5)
and TL-WDR4300 (HW V1.7)
--------------------------+-----------------------------------
Reporter: michaeluray | Owner: developers
Type: defect | Status: new
Priority: high | Milestone: Barrier Breaker 14.07
Component: base system | Version: Barrier Breaker 14.07
Resolution: | Keywords: reboot
--------------------------+-----------------------------------
Comment (by michaeluray):
I also have tried now the following code, but it did not work. - The
router was hanging after a reset:
{{{
#c!
void ath79_device_reset_set(u32 mask)
{
unsigned long flags;
u32 reg;
u32 t;
if (soc_is_ar71xx())
reg = AR71XX_RESET_REG_RESET_MODULE;
else if (soc_is_ar724x())
reg = AR724X_RESET_REG_RESET_MODULE;
else if (soc_is_ar913x())
reg = AR913X_RESET_REG_RESET_MODULE;
else if (soc_is_ar933x())
reg = AR933X_RESET_REG_RESET_MODULE;
else if (soc_is_ar934x())
reg = AR934X_RESET_REG_RESET_MODULE;
else if (soc_is_qca953x())
reg = QCA953X_RESET_REG_RESET_MODULE;
else if (soc_is_qca955x())
reg = QCA955X_RESET_REG_RESET_MODULE;
else
panic("Reset register not defined for this SOC");
spin_lock_irqsave(&ath79_device_reset_lock, flags);
t = ath79_reset_rr(reg);
if (mask == AR71XX_RESET_FULL_CHIP)
ath79_reset_wr(reg, mask);
else
ath79_reset_wr(reg, t | mask);
spin_unlock_irqrestore(&ath79_device_reset_lock, flags);
}
}}}
It looks like as it is important to lock the interrupts, set the reset
flag and wait there until the CPU reboots.
--
Ticket URL: <https://dev.openwrt.org/ticket/17839#comment:56>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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