[PATCH 2.5.54] UPDATE hermes: serialization fixes

[Stephen Evanchik]

This fixes "Error -110 writing Tx descriptor to BAP" bug as referenced in David Gibson's README.

As per a suggestion, I've moved the spin_lock/unlock to hermes_bap_seek(). I'm currently running with
this module and it's working nicely. 

As always, any comments are appreciated. Patches can be always downloaded from here:

http://www.clarkson.edu/~evanchsa/software/kernel/patches

Stephen Evanchik

--- linux-2.5.54/drivers/net/wireless/hermes.h	2003-01-01 22:21:02.000000000 -0500
+++ linux-2.5.54-devel/drivers/net/wireless/hermes.h	2003-01-03 15:32:33.000000000 -0500
@@ -288,6 +288,9 @@
 
 	u16 inten; /* Which interrupts should be enabled? */
 
+	/* Lock used in hermes_bap_seek */
+	spinlock_t baplock;
+
 #ifdef HERMES_DEBUG_BUFFER
 	struct hermes_debug_entry dbuf[HERMES_DEBUG_BUFSIZE];
 	unsigned long dbufp;
--- linux-2.5.54/drivers/net/wireless/hermes.c	2003-01-01 22:21:13.000000000 -0500
+++ linux-2.5.54-devel/drivers/net/wireless/hermes.c	2003-01-03 15:34:23.000000000 -0500
@@ -342,11 +342,15 @@
 	int oreg = bap ? HERMES_OFFSET1 : HERMES_OFFSET0;
 	int k;
 	u16 reg;
+	unsigned long flags;
 
 	/* Paranoia.. */
 	if ( (offset > HERMES_BAP_OFFSET_MAX) || (offset % 2) )
 		return -EINVAL;
 
+	/* Without it, network connection errors occur.. */
+	spin_lock_irqsave(&(hw->baplock), flags);
+
 	k = HERMES_BAP_BUSY_TIMEOUT;
 	reg = hermes_read_reg(hw, oreg);
 	while ((reg & HERMES_OFFSET_BUSY) && k) {
@@ -368,6 +372,8 @@
 	}
 #endif
 
+	spin_unlock_irqrestore(&(hw->baplock), flags);
+
 	if (reg & HERMES_OFFSET_BUSY)
 		return -ETIMEDOUT;