Re: [PATCH 2/2] ARM: davinci: PM: Do not free useful resources in normal path in 'davinci_pm_init'

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Le 13/05/2017 à 15:22, walter harms a écrit :

Am 13.05.2017 13:40, schrieb Christophe JAILLET:
This looks spurious to iounmap resources in the normal path of this init
function.
The 3 ioremap'ed fields of 'pm_config' can be accessed later on in other
functions, so it is likely that we should return 'success' before unrolling
everything.

Fixes: aa9aa1ec2df6 ("ARM: davinci: PM: rework init, remove platform device")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
This patch is just a *guess*. The end of the function looks more like a
error handling code rather than a normal path.
---
  arch/arm/mach-davinci/pm.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-davinci/pm.c b/arch/arm/mach-davinci/pm.c
index d282b0783ecf..163d865abbf9 100644
--- a/arch/arm/mach-davinci/pm.c
+++ b/arch/arm/mach-davinci/pm.c
@@ -161,6 +161,7 @@ int __init davinci_pm_init(void)
  						davinci_cpu_suspend_sz);
suspend_set_ops(&davinci_pm_ops);
+	return 0;
no_sram_mem:
  	iounmap(pm_config.ddrpsc_reg_base);

looks like, but that would mean that is wrong also:

	davinci_sram_suspend = sram_alloc(davinci_cpu_suspend_sz, NULL);
	if (!davinci_sram_suspend) {
		pr_err("PM: cannot allocate SRAM memory\n");
		return -ENOMEM;
	}

what means 1 iounmap missing.

re,
  wh

This is what I try to fix in the [1/2] patch.

CJ

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