commit 8d662c8d34a05e8e47deaa9e22fe770dc557c2d3
author David Daney <ddaney@caviumnetworks.com> Mon Dec 27 18:18:29 2010 -0800
committer Ralf Baechle <ralf@linux-mips.org> Tue Jan 18 19:30:24 2011 +0100
tree 96f8ee1bcbda6aded36a9f551f4df8179e33782c
parent 2c8c53e28f178577dfdf3a69731b998b7e3df8ae

MIPS: Use WARN() in uasm for better diagnostics.

On the off chance that uasm ever warns about overflow, there is no way
to know what the offending instruction is.

Change the printks to WARNs, so we can get a nice stack trace.  It has
the added benefit of being much more noticeable than the short single
line warning message, so is less likely to be ignored.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1905/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/mm/uasm.c

diff --git a/arch/mips/mm/uasm.c b/arch/mips/mm/uasm.c
index 357916d..5fa1851 100644
--- a/arch/mips/mm/uasm.c
+++ b/arch/mips/mm/uasm.c
@@ -156,91 +156,83 @@
 
 static inline __uasminit u32 build_rs(u32 arg)
 {
-	if (arg & ~RS_MASK)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~RS_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 
 	return (arg & RS_MASK) << RS_SH;
 }
 
 static inline __uasminit u32 build_rt(u32 arg)
 {
-	if (arg & ~RT_MASK)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~RT_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 
 	return (arg & RT_MASK) << RT_SH;
 }
 
 static inline __uasminit u32 build_rd(u32 arg)
 {
-	if (arg & ~RD_MASK)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~RD_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 
 	return (arg & RD_MASK) << RD_SH;
 }
 
 static inline __uasminit u32 build_re(u32 arg)
 {
-	if (arg & ~RE_MASK)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~RE_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 
 	return (arg & RE_MASK) << RE_SH;
 }
 
 static inline __uasminit u32 build_simm(s32 arg)
 {
-	if (arg > 0x7fff || arg < -0x8000)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg > 0x7fff || arg < -0x8000,
+	     KERN_WARNING "Micro-assembler field overflow\n");
 
 	return arg & 0xffff;
 }
 
 static inline __uasminit u32 build_uimm(u32 arg)
 {
-	if (arg & ~IMM_MASK)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~IMM_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 
 	return arg & IMM_MASK;
 }
 
 static inline __uasminit u32 build_bimm(s32 arg)
 {
-	if (arg > 0x1ffff || arg < -0x20000)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg > 0x1ffff || arg < -0x20000,
+	     KERN_WARNING "Micro-assembler field overflow\n");
 
-	if (arg & 0x3)
-		printk(KERN_WARNING "Invalid micro-assembler branch target\n");
+	WARN(arg & 0x3, KERN_WARNING "Invalid micro-assembler branch target\n");
 
 	return ((arg < 0) ? (1 << 15) : 0) | ((arg >> 2) & 0x7fff);
 }
 
 static inline __uasminit u32 build_jimm(u32 arg)
 {
-	if (arg & ~((JIMM_MASK) << 2))
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~(JIMM_MASK << 2),
+	     KERN_WARNING "Micro-assembler field overflow\n");
 
 	return (arg >> 2) & JIMM_MASK;
 }
 
 static inline __uasminit u32 build_scimm(u32 arg)
 {
-	if (arg & ~SCIMM_MASK)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~SCIMM_MASK,
+	     KERN_WARNING "Micro-assembler field overflow\n");
 
 	return (arg & SCIMM_MASK) << SCIMM_SH;
 }
 
 static inline __uasminit u32 build_func(u32 arg)
 {
-	if (arg & ~FUNC_MASK)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~FUNC_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 
 	return arg & FUNC_MASK;
 }
 
 static inline __uasminit u32 build_set(u32 arg)
 {
-	if (arg & ~SET_MASK)
-		printk(KERN_WARNING "Micro-assembler field overflow\n");
+	WARN(arg & ~SET_MASK, KERN_WARNING "Micro-assembler field overflow\n");
 
 	return arg & SET_MASK;
 }