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Groups > linux.kernel > #1244678 > unrolled thread

[PATCH] sata/mvebu: use #ifdef around suspend/resume code

Started byArnd Bergmann <arnd@arndb.de>
First post2015-10-12 15:10 +0200
Last post2015-10-12 15:40 +0200
Articles 3 — 2 participants

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  [PATCH] sata/mvebu: use #ifdef around suspend/resume code Arnd Bergmann <arnd@arndb.de> - 2015-10-12 15:10 +0200
    Re: [PATCH] sata/mvebu: use #ifdef around suspend/resume code Thomas Petazzoni <thomas.petazzoni@free-electrons.com> - 2015-10-12 15:30 +0200
      Re: [PATCH] sata/mvebu: use #ifdef around suspend/resume code Arnd Bergmann <arnd@arndb.de> - 2015-10-12 15:40 +0200

#1244678 — [PATCH] sata/mvebu: use #ifdef around suspend/resume code

FromArnd Bergmann <arnd@arndb.de>
Date2015-10-12 15:10 +0200
Subject[PATCH] sata/mvebu: use #ifdef around suspend/resume code
Message-ID<qiL1x-8hA-29@gated-at.bofh.it>
The newly added suspend/resume implementation for ahci_mvebu causes
a link error when CONFIG_PM_SUSPEND is disabled:

ERROR: "ahci_platform_suspend_host" [drivers/ata/ahci_mvebu.ko] undefined!
ERROR: "ahci_platform_resume_host" [drivers/ata/ahci_mvebu.ko] undefined!

This adds the same #ifdef here that exists in the ahci_platform driver
which defines the above functions.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d6ecf1581488 ("ata: ahci_mvebu: add suspend/resume support")

diff --git a/drivers/ata/ahci_mvebu.c b/drivers/ata/ahci_mvebu.c
index 8490d37aee2a..5745bcce5e77 100644
--- a/drivers/ata/ahci_mvebu.c
+++ b/drivers/ata/ahci_mvebu.c
@@ -62,6 +62,7 @@ static void ahci_mvebu_regret_option(struct ahci_host_priv *hpriv)
 	writel(0x80, hpriv->mmio + AHCI_VENDOR_SPECIFIC_0_DATA);
 }
 
+#ifdef CONFIG_PM_SUSPEND
 static int ahci_mvebu_suspend(struct platform_device *pdev, pm_message_t state)
 {
 	return ahci_platform_suspend_host(&pdev->dev);
@@ -81,6 +82,10 @@ static int ahci_mvebu_resume(struct platform_device *pdev)
 
 	return ahci_platform_resume_host(&pdev->dev);
 }
+#else
+#define ahci_mvebu_suspend NULL
+#define ahci_mvebu_resume NULL
+#endif
 
 static const struct ata_port_info ahci_mvebu_port_info = {
 	.flags	   = AHCI_FLAG_COMMON,

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#1244690

FromThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date2015-10-12 15:30 +0200
Message-ID<qiLkR-cI-3@gated-at.bofh.it>
In reply to#1244678
Arnd,

On Mon, 12 Oct 2015 15:05:27 +0200, Arnd Bergmann wrote:

> +#ifdef CONFIG_PM_SUSPEND

Shouldn't this be CONFIG_PM_SLEEP ?

The generic suspend/resume function in libahci_platform.c are defined
when CONFIG_PM_SLEEP is enabled.

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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#1244692

FromArnd Bergmann <arnd@arndb.de>
Date2015-10-12 15:40 +0200
Message-ID<qiLuy-ok-3@gated-at.bofh.it>
In reply to#1244690
On Monday 12 October 2015 15:27:03 Thomas Petazzoni wrote:
> Arnd,
> 
> On Mon, 12 Oct 2015 15:05:27 +0200, Arnd Bergmann wrote:
> 
> > +#ifdef CONFIG_PM_SUSPEND
> 
> Shouldn't this be CONFIG_PM_SLEEP ?
> 
> The generic suspend/resume function in libahci_platform.c are defined
> when CONFIG_PM_SLEEP is enabled.
> 

Right, I'll send a fixed version, please ignore this one!

	Arnd
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