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WAN: Fix a TX IRQ causing BUG() in PC300 and PCI200SYN drivers.
authorKrzysztof Halasa <khc@pm.waw.pl>
Sun, 12 Dec 2010 12:06:47 +0000 (12:06 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 12 Dec 2010 23:03:00 +0000 (15:03 -0800)
commiteaff9453d3e2b63969af93e9d42a85e803060121
treef27368d0796494cc8d8469e2f387cb2d43f4b209tree | snapshot
parent9f5449611c9d6d7bdcae8020a197d8b4d9b6443ccommit | diff
WAN: Fix a TX IRQ causing BUG() in PC300 and PCI200SYN drivers.

We must not wake the TX queue without free TX descriptors.
sca_xmit() expects at least one free descriptor and BUGs otherwise.

Problem reported and fix tested by Bernie Innocenti and Ward Vandewege.

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/wan/hd64572.c diff | blob | history
Linux kernel for KaRo TX COM modules