Re: [patch] sparc: leon: Fix a retry loop in leon_init_timers()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



It looks good.

Thanks!
/Daniel


On 2016-11-25 12:25, Dan Carpenter wrote:
The original code causes a static checker warning because it has a
continue inside a do { } while (0); loop.  In that context, a continue
and a break are equivalent.  The intent was to go back to the start of
the loop so the continue was a bug.

I've added a retry label at the start and changed the continue to a goto
retry.  Then I removed the do { } while (0) loop and pulled the code in
one indent level.

Fixes: 2791c1a43900 ("SPARC/LEON: added support for selecting Timer Core and Timer within core")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
Not tested.

diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index 33cd171..afcdd5e 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -349,37 +349,37 @@ void __init leon_init_timers(void)
/* Find GPTIMER Timer Registers base address otherwise bail out. */
  	nnp = rootnp;
-	do {
-		np = of_find_node_by_name(nnp, "GAISLER_GPTIMER");
-		if (!np) {
-			np = of_find_node_by_name(nnp, "01_011");
-			if (!np)
-				goto bad;
-		}
- ampopts = 0;
-		pp = of_find_property(np, "ampopts", &len);
-		if (pp) {
-			ampopts = *(int *)pp->value;
-			if (ampopts == 0) {
-				/* Skip this instance, resource already
-				 * allocated by other OS */
-				nnp = np;
-				continue;
-			}
+retry:
+	np = of_find_node_by_name(nnp, "GAISLER_GPTIMER");
+	if (!np) {
+		np = of_find_node_by_name(nnp, "01_011");
+		if (!np)
+			goto bad;
+	}
+
+	ampopts = 0;
+	pp = of_find_property(np, "ampopts", &len);
+	if (pp) {
+		ampopts = *(int *)pp->value;
+		if (ampopts == 0) {
+			/* Skip this instance, resource already
+			 * allocated by other OS */
+			nnp = np;
+			goto retry;
  		}
+	}
+
+	/* Select Timer-Instance on Timer Core. Default is zero */
+	leon3_gptimer_idx = ampopts & 0x7;
- /* Select Timer-Instance on Timer Core. Default is zero */
-		leon3_gptimer_idx = ampopts & 0x7;
-
-		pp = of_find_property(np, "reg", &len);
-		if (pp)
-			leon3_gptimer_regs = *(struct leon3_gptimer_regs_map **)
-						pp->value;
-		pp = of_find_property(np, "interrupts", &len);
-		if (pp)
-			leon3_gptimer_irq = *(unsigned int *)pp->value;
-	} while (0);
+	pp = of_find_property(np, "reg", &len);
+	if (pp)
+		leon3_gptimer_regs = *(struct leon3_gptimer_regs_map **)
+					pp->value;
+	pp = of_find_property(np, "interrupts", &len);
+	if (pp)
+		leon3_gptimer_irq = *(unsigned int *)pp->value;
if (!(leon3_gptimer_regs && leon3_irqctrl_regs && leon3_gptimer_irq))
  		goto bad;

--
To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Kernel Development]     [Kernel Announce]     [Kernel Newbies]     [Linux Networking Development]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Device Mapper]

  Powered by Linux