[patch 08/24] Blackfin: fix command line corruption with DEBUG_DOUBLEFAULT

[Greg KH]

2.6.30-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Mike Frysinger <vapier@xxxxxxxxxx>

commit 37082511f06108129bd5f96d625a6fae2d5a4ab4 upstream.

Commit 6b3087c6 (which introduced Blackfin SMP) broke command line passing
when the DEBUG_DOUBLEFAULT config option was enabled.  Switch the code to
using a scratch register and not R7 which holds the command line.

Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 arch/blackfin/mach-common/head.S |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

--- a/arch/blackfin/mach-common/head.S
+++ b/arch/blackfin/mach-common/head.S
@@ -126,25 +126,25 @@ ENTRY(__start)
 	 * below
 	 */
 	GET_PDA(p0, r0);
-	r7 = [p0 + PDA_RETX];
+	r6 = [p0 + PDA_RETX];
 	p1.l = _init_saved_retx;
 	p1.h = _init_saved_retx;
-	[p1] = r7;
+	[p1] = r6;
 
-	r7 = [p0 + PDA_DCPLB];
+	r6 = [p0 + PDA_DCPLB];
 	p1.l = _init_saved_dcplb_fault_addr;
 	p1.h = _init_saved_dcplb_fault_addr;
-	[p1] = r7;
+	[p1] = r6;
 
-	r7 = [p0 + PDA_ICPLB];
+	r6 = [p0 + PDA_ICPLB];
 	p1.l = _init_saved_icplb_fault_addr;
 	p1.h = _init_saved_icplb_fault_addr;
-	[p1] = r7;
+	[p1] = r6;
 
-	r7 = [p0 + PDA_SEQSTAT];
+	r6 = [p0 + PDA_SEQSTAT];
 	p1.l = _init_saved_seqstat;
 	p1.h = _init_saved_seqstat;
-	[p1] = r7;
+	[p1] = r6;
 #endif
 
 	/* Initialize stack pointer */


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