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nusb/kb: increase mouse packet buffer from 32 to 64 bytes for Microsoft Sidewinder X5 Mouse (thanks Rexford Gibbs for reporting and testing)

--- a/sys/src/cmd/nusb/kb/kb.c

+++ b/sys/src/cmd/nusb/kb/kb.c

@@ -227,7 +227,7 @@

 	static char maptab[] = {0x0, 0x1, 0x4, 0x5, 0x2, 0x3, 0x6, 0x7};

 	int x, y, b, c, ptrfd;

 	int	mfd, nerrs;

-	char	buf[32];

+	char	buf[64];

 	char	mbuf[80];

 	KDev*	f = a;

 	int	hipri;

-- 

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