linux-kernel - [09/35] ath9k: Fix suspend/resume when no interface is UP

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Date:	Fri, 08 Jul 2011 15:49:58 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Rajkumar Manoharan <rmanohar@....qualcomm.com>,
	"John W. Linville" <linville@...driver.com>
Subject: [09/35] ath9k: Fix suspend/resume when no interface is UP

2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Rajkumar Manoharan <rmanohar@....qualcomm.com>

commit c31eb8e926835582cd186b33a7a864880a4c0c79 upstream.

When no interface has been brought up, the chip's power
state continued as AWAKE. So during resume, the chip never
been powered up.

Signed-off-by: Rajkumar Manoharan <rmanohar@....qualcomm.com>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/wireless/ath/ath9k/pci.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -276,6 +276,12 @@ static int ath_pci_resume(struct pci_dev
 			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 	ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
 
+	/* The device has to be moved to FULLSLEEP forcibly.
+	 * Otherwise the chip never moved to full sleep,
+	 * when no interface is up.
+	 */
+	ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP);
+
 	return 0;
 }
 


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