powerpc: fix dcr_unmap()

Fix a bug in dcr_unmap().

At unmap time the DCR offset need to be added instead of substracted.

Signed-off-by Jean-Christophe Dubois <[email protected]>

Index: linux-2.6.20/arch/powerpc/sysdev/dcr.c
===================================================================

arch/powerpc/sysdev/dcr.c +1 -1

@@ -129,7 +129,7 @@ void dcr_unmap(dcr_host_t host, unsigned
 
 	if (h.token == NULL)
 		return;
-	h.token -= dcr_n * h.stride;
+	h.token += dcr_n * h.stride;
 	iounmap(h.token);
 	h.token = NULL;
 }

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Quoted 5 lines · Jean-Christophe Dubois

Fix a bug in dcr_unmap().

At unmap time the DCR offset need to be added instead of substracted.

Signed-off-by Jean-Christophe Dubois <[email protected]>

Acked-by Benjamin Herrenschmidt <[email protected]>

---

If possible that should go in 2.6.21

Quoted 7 lines · Benjamin Herrenschmidt

Quoted 5 lines · Jean-Christophe Dubois

Fix a bug in dcr_unmap().

At unmap time the DCR offset need to be added instead of substracted.

Signed-off-by Jean-Christophe Dubois <[email protected]>

Quoted 4 lines

Acked-by Benjamin Herrenschmidt <[email protected]>

---

If possible that should go in 2.6.21

Can I get an original patch email and/or a git pull request? I didn't see the original email, since I'm not on the linuxppc list..