[linux-dvb] Kernel locking in dst

Ralph Metzler rjkm at metzlerbros.de
Tue Oct 18 19:05:30 CEST 2005


Manu Abraham writes:
 > diff -Naurp bt8xx.orig/dst.c bt8xx/dst.c
 > --- bt8xx.orig/dst.c	2005-09-21 20:29:09.000000000 +0400
 > +++ bt8xx/dst.c	2005-10-18 19:38:27.000000000 +0400
 > @@ -910,6 +910,7 @@ static int dst_get_device_id(struct dst_
 >  
 >  static int dst_probe(struct dst_state *state)
 >  {
 > +	sema_init(&state->dst_mutex, 1);
 >  	if ((rdc_8820_reset(state)) < 0) {
 >  		dprintk(verbose, DST_ERROR, 1, "RDC 8820 RESET Failed.");
 >  		return -1;
 > @@ -960,21 +961,23 @@ static int dst_probe(struct dst_state *s
 >  int dst_command(struct dst_state *state, u8 *data, u8 len)
 >  {
 >  	u8 reply;
 > +
 > +	up(&state->dst_mutex);
 >  	if ((dst_comm_init(state)) < 0) {
 >  		dprintk(verbose, DST_NOTICE, 1, "DST Communication Initialization Failed.");


This should be down()?


Ralph



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