linux-kernel - [RFC PATCH 6/6] ARM: OMAP3: Enable Hardware Save and Restore for USB Host

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1371650753-11452-7-git-send-email-rogerq@ti.com>
Date:	Wed, 19 Jun 2013 17:05:53 +0300
From:	Roger Quadros <rogerq@...com>
To:	<stern@...land.harvard.edu>, <tony@...mide.com>
CC:	<balbi@...com>, <ruslan.bilovol@...com>,
	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Roger Quadros <rogerq@...com>
Subject: [RFC PATCH 6/6] ARM: OMAP3: Enable Hardware Save and Restore for USB Host

To ensure hardware context is restored while resuming from
OFF mode we need to enable the Hardware SAR bit for the
USB Host power domain.

Signed-off-by: Roger Quadros <rogerq@...com>
---
 arch/arm/mach-omap2/powerdomains3xxx_data.c |    8 +-------
 1 files changed, 1 insertions(+), 7 deletions(-)

diff --git a/arch/arm/mach-omap2/powerdomains3xxx_data.c b/arch/arm/mach-omap2/powerdomains3xxx_data.c
index f0e14e9..9554d2b 100644
--- a/arch/arm/mach-omap2/powerdomains3xxx_data.c
+++ b/arch/arm/mach-omap2/powerdomains3xxx_data.c
@@ -289,13 +289,7 @@ static struct powerdomain usbhost_pwrdm = {
 	.prcm_offs	  = OMAP3430ES2_USBHOST_MOD,
 	.pwrsts		  = PWRSTS_OFF_RET_ON,
 	.pwrsts_logic_ret = PWRSTS_RET,
-	/*
-	 * REVISIT: Enabling usb host save and restore mechanism seems to
-	 * leave the usb host domain permanently in ACTIVE mode after
-	 * changing the usb host power domain state from OFF to active once.
-	 * Disabling for now.
-	 */
-	/*.flags	  = PWRDM_HAS_HDWR_SAR,*/ /* for USBHOST ctrlr only */
+	.flags	  = PWRDM_HAS_HDWR_SAR, /* for USBHOST ctrlr only */
 	.banks		  = 1,
 	.pwrsts_mem_ret	  = {
 		[0] = PWRSTS_RET, /* MEMRETSTATE */
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/