linux-kernel - [PATCH 1/7] mfd: pcf50633 disable unnecessary shutdown on lowsys

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-next>] [day] [month] [year] [list]

Date:	Wed, 14 Oct 2009 02:12:30 +0400
From:	Paul Fertser <fercerpav@...il.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org,
	Nelson Castillo <arhuaco@...aks-unidos.net>,
	Paul Fertser <fercerpav@...il.com>
Subject: [PATCH 1/7] mfd: pcf50633 disable unnecessary shutdown on lowsys

On gta02 hardware revision A5 it can actually bring the system down
during normal operating conditions so we disable it.

Signed-off-by: Paul Fertser <fercerpav@...il.com>
---
 drivers/mfd/pcf50633-core.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c
index d26d774..6efe5c3 100644
--- a/drivers/mfd/pcf50633-core.c
+++ b/drivers/mfd/pcf50633-core.c
@@ -345,6 +345,9 @@ static void pcf50633_irq_worker(struct work_struct *work)
 		goto out;
 	}
 
+	/* defeat 8s death from lowsys on A5 */
+	pcf50633_reg_write(pcf, PCF50633_REG_OOCSHDWN,  0x04);
+
 	/* We immediately read the usb and adapter status. We thus make sure
 	 * only of USBINS/USBREM IRQ handlers are called */
 	if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) {
-- 
1.6.0.6

--
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/