Re: [net/9p/9pnet.c] Compile error

From: Eric Van Hensbergen
Date: Mon Oct 20 2008 - 17:04:58 EST


On Mon, Oct 20, 2008 at 3:49 PM, Jason Baron <jbaron@xxxxxxxxxx> wrote:
> On Mon, Oct 20, 2008 at 09:27:25PM +0200, Alejandro Riveira Fernández wrote:
>> Current Git
>> v2.6.27-6030-g6da0b38
>>
>> I get a build error
>>
>> Kernel: arch/x86/boot/bzImage is ready (#17)
>> Building modules, stage 2.
>> MODPOST 571 modules
>> ERROR: "p9_debug_level" [net/9p/9pnet.ko] undefined!
>> make[3]: *** [__modpost] Error 1
>> make[2]: *** [modules] Error 2
>> make[1]: *** [sub-make] Error 2
>> make: *** [all] Error 2
>>

Sorry for the mess. I'm pushing the following patch to my for-linus
tree which resolves the issue.

-eric

9p: fix debug build error

Fixes build problem with 9p when building with debug disabled.
Also contains some fixes for warnings which pop up when
CONFIG_NET_9P_DEBUG is disabled.

Signed-off-by: Eric Van Hensbergen <ericvh@xxxxxxxxx>
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index d2c60c7..b77c147 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -56,9 +56,9 @@ enum p9_debug_flags {
P9_DEBUG_PKT = (1<<10),
};

+#ifdef CONFIG_NET_9P_DEBUG
extern unsigned int p9_debug_level;

-#ifdef CONFIG_NET_9P_DEBUG
#define P9_DPRINTK(level, format, arg...) \
do { \
if ((p9_debug_level & level) == level) {\
diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 29be524..908e79f 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -53,6 +53,7 @@
static int
p9pdu_writef(struct p9_fcall *pdu, int optional, const char *fmt, ...);

+#ifdef CONFIG_NET_9P_DEBUG
void
p9pdu_dump(int way, struct p9_fcall *pdu)
{
@@ -81,6 +82,12 @@ p9pdu_dump(int way, struct p9_fcall *pdu)
else
P9_DPRINTK(P9_DEBUG_PKT, "]]](%d) %s\n", datalen, buf);
}
+#else
+void
+p9pdu_dump(int way, struct p9_fcall *pdu)
+{
+}
+#endif
EXPORT_SYMBOL(p9pdu_dump);

void p9stat_free(struct p9_wstat *stbuf)
@@ -542,8 +549,10 @@ int p9pdu_finalize(struct p9_fcall *pdu)
err = p9pdu_writef(pdu, 0, "d", size);
pdu->size = size;

+#ifdef CONFIG_NET_9P_DEBUG
if ((p9_debug_level & P9_DEBUG_PKT) == P9_DEBUG_PKT)
p9pdu_dump(0, pdu);
+#endif

P9_DPRINTK(P9_DEBUG_9P, ">>> size=%d type: %d tag: %d\n", pdu->size,
pdu->id, pdu->tag);
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index be65d82..1df0356 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -678,11 +678,9 @@ static int p9_fd_request(struct p9_client
*client, struct p9_req_t *req)

static int p9_fd_cancel(struct p9_client *client, struct p9_req_t *req)
{
- struct p9_trans_fd *ts = client->trans;
- struct p9_conn *m = ts->conn;
int ret = 1;

- P9_DPRINTK(P9_DEBUG_TRANS, "mux %p req %p\n", m, req);
+ P9_DPRINTK(P9_DEBUG_TRANS, "client %p req %p\n", client, req);

spin_lock(&client->lock);
list_del(&req->req_list);
--
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