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Date: Fri, 10 Mar 2017 11:46:10 +0000 From: Ben Hutchings <ben@...adent.org.uk> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org CC: akpm@...ux-foundation.org, "Dan Carpenter" <dan.carpenter@...cle.com>, "David S. Miller" <davem@...emloft.net> Subject: [PATCH 3.2 042/199] sparc: leon: Fix a retry loop in leon_init_timers() 3.2.87-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter <dan.carpenter@...cle.com> commit 601e6e3cc5bf6adb7d076fe24d10f6191a25ba9b upstream. 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@...cle.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Ben Hutchings <ben@...adent.org.uk> --- arch/sparc/kernel/leon_kernel.c | 56 ++++++++++++++++++++--------------------- 1 file changed, 28 insertions(+), 28 deletions(-) --- a/arch/sparc/kernel/leon_kernel.c +++ b/arch/sparc/kernel/leon_kernel.c @@ -288,37 +288,37 @@ void __init leon_init_timers(irq_handler /* 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;
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