xtensa: fix xtensa_wsr always writing 0

The commit cad6fade6e78 ("xtensa: clean up WSR*/RSR*/get_sr/set_sr")
replaced 'WSR' macro in the function xtensa_wsr with 'xtensa_set_sr',
but variable 'v' in the xtensa_set_sr body shadowed the argument 'v'
passed to it, resulting in wrong value written to debug registers.

Fix that by removing intermediate variable from the xtensa_set_sr
macro body.

Cc: stable@vger.kernel.org
Fixes: cad6fade6e78 ("xtensa: clean up WSR*/RSR*/get_sr/set_sr")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index ba62bbc..67ccc3d 100644 (file)
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -242,8 +242,8 @@ extern unsigned long __get_wchan(struct task_struct *p);
 
 #define xtensa_set_sr(x, sr) \
        ({ \
-        unsigned int v = (unsigned int)(x); \
-        __asm__ __volatile__ ("wsr %0, "__stringify(sr) :: "a"(v)); \
+        __asm__ __volatile__ ("wsr %0, "__stringify(sr) :: \
+                              "a"((unsigned int)(x))); \
         })
 
 #define xtensa_get_sr(sr) \