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Fix a deadlock when using the NSH ifconfig command over Telnet

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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4487 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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patacongo
2012-03-13 20:51:48 +00:00
parent fd38715cba
commit 227b5d0f56
7 changed files with 199 additions and 35 deletions
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nuttx/ChangeLog
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@@ -2563,3 +2563,11 @@
for use within the OS.
* arch/mips/src/pic32mx/pic32mx_ethernet.c: The PIC32 Ethernet driver
is now stable on the PIC32 Starter Kit.
* configs/pic32-starterkit/nsh2: Add a PIC32 Ethernet Starter Kit NSH
configuration that has no serial console; all interaction is done via
Telnet.
* net/netdev_sem.c: Correct a deadlock condition by making a seamphore
recursive. To my knowledge this deadlock only occurs when running the
NSH command ifconfig over Telnet. In that case the function netdev_foreach
takes the network device semaphore, but so does the telnet logic causing
the deadlock.