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Add fix for lan78xx RX packets (Raspberry Pi 3B+)

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Peter Robinson 2018-08-01 18:07:54 +01:00
parent 27910d55be
commit 059f3ba4f2
2 changed files with 103 additions and 0 deletions
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6
kernel.spec
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@ -615,6 +615,9 @@ Patch330: bcm2837-rpi-initial-3plus-support.patch
Patch332: bcm2837-enable-pmu.patch
Patch333: bcm2837-lan78xx-fixes.patch
# https://patchwork.kernel.org/patch/10547897/
Patch334: net-lan78xx-fix-rx-handling-before-first-packet-is-send.patch
# 400 - IBM (ppc/s390x) patches
# 500 - Temp fixes/CVEs etc
@ -1926,6 +1929,9 @@ fi
#
#
%changelog
* Wed Aug 1 2018 Peter Robinson <pbrobinson@fedoraproject.org>
- Add fix for lan78xx RX packets (Raspberry Pi 3B+)
* Mon Jul 30 2018 Justin M. Forbes <jforbes@fedoraproject.org> - 4.17.11-200
- Linux v4.17.11
- Turn off kernel-headers for the split

97
net-lan78xx-fix-rx-handling-before-first-packet-is-send.patch Normal file
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@ -0,0 +1,97 @@
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From: Stefan Wahren <stefan.wahren@i2se.com>
To: Woojung Huh <woojung.huh@microchip.com>,
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Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
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Subject: [PATCH] net: lan78xx: fix rx handling before first packet is send
Date: Sat, 28 Jul 2018 09:52:10 +0200
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As long the bh tasklet isn't scheduled once, no packet from the rx path
will be handled. Since the tx path also schedule the same tasklet
this situation only persits until the first packet transmission.
So fix this issue by scheduling the tasklet after link reset.
Link: https://github.com/raspberrypi/linux/issues/2617
Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet")
Suggested-by: Floris Bos <bos@je-eigen-domein.nl>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
drivers/net/usb/lan78xx.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index ed10d49..aeca484 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -1242,6 +1242,8 @@ static int lan78xx_link_reset(struct lan78xx_net *dev)
mod_timer(&dev->stat_monitor,
jiffies + STAT_UPDATE_TIMER);
}
+
+ tasklet_schedule(&dev->bh);
}
return ret;