[PATCH] xen: silence stdvga

[PATCH] xen: silence stdvga

[Christoph Egger]

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Hi!

Attached patch prevents stdvga to print the 'unsupported mmio request type'
warning when the actual request type is 'IOREQ_TYPE_COPY'.
This avoids confusion.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>


-- 
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Andrew Bowd, Thomas M. McCoy, Giuliano Meroni
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

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diff -r fa5fd3c5ed42 xen/arch/x86/hvm/stdvga.c
--- a/xen/arch/x86/hvm/stdvga.c	Tue Mar 09 11:46:08 2010 +0100
+++ b/xen/arch/x86/hvm/stdvga.c	Tue Mar 09 11:51:56 2010 +0100
@@ -561,8 +563,9 @@ static int stdvga_intercept_mmio(ioreq_t
         {
         case IOREQ_TYPE_COPY:
             buf = mmio_move(s, p);
-            if ( buf )
-                break;
+            if ( !buf )
+                s->cache = 0;
+            break;
         default:
             gdprintk(XENLOG_WARNING, "unsupported mmio request type:%d "
                      "addr:0x%04x data:0x%04x size:%d count:%d state:%d "

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