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[Qemu-devel] [PATCH] LAN9118: Handling write to BYTE_TEST register
From: |
Bertrand Cachet |
Subject: |
[Qemu-devel] [PATCH] LAN9118: Handling write to BYTE_TEST register |
Date: |
Mon, 14 Nov 2011 10:39:57 +0100 |
Prevent LAN9118 driver to finish in hardware error when writing
to the BYTE_TEST register.
This register (even if ReadOnly) is used to wake-up the device when it is in
low power consumption mode.
Add case for BYTE_TEST in lan9118_writel method. Just write some documentation
explaining use its use.
Signed-off-by: Bertrand Cachet <address@hidden>
---
hw/lan9118.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/hw/lan9118.c b/hw/lan9118.c
index f8149e6..65096d4 100644
--- a/hw/lan9118.c
+++ b/hw/lan9118.c
@@ -977,6 +977,15 @@ static void lan9118_writel(void *opaque,
target_phys_addr_t offset,
s->pmt_ctrl &= ~0x34e;
s->pmt_ctrl |= (val & 0x34e);
break;
+ case CSR_BYTE_TEST:
+ /* Even if this register is marked ReadOnly in the datasheet,
+ a write to this register will wake up the device when
+ PM_MODE is currently in D1 or D2 mode.
+
+ As Power Modes are not handled in this driver, we will
+ leave this case with no implementation.
+ */
+ break;
case CSR_GPIO_CFG:
/* Probably just enabling LEDs. */
s->gpio_cfg = val & 0x7777071f;
--
1.7.5.4
- [Qemu-devel] [PATCH] LAN9118: Handling write to BYTE_TEST register,
Bertrand Cachet <=