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Patch "drm/radeon/atom: Send out the full AUX address" has been added to the 4.2-stable tree

PATCH [email protected] 1 participant 1 message Sep 15, 2015

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This is a note to let you know that I've just added the patch titled

drm/radeon/atom: Send out the full AUX address

to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
drm-radeon-atom-send-out-the-full-aux-address.patch
and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 3f8340cc72c9a1a4b49bce7802afd7f248400ef5 Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <[email protected]>
Date: Thu, 27 Aug 2015 17:23:31 +0300
Subject: drm/radeon/atom: Send out the full AUX address
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Content-Type: text/plain; charset=UTF-8
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From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <[email protected]>

commit 3f8340cc72c9a1a4b49bce7802afd7f248400ef5 upstream.

AUX addresses are 20 bits long. Send out the entire address instead of just the low 16 bits.

---
 drivers/gpu/drm/radeon/atombios_dp.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
drivers/gpu/drm/radeon/atombios_dp.c +3 -2
@@ -171,8 +171,9 @@ radeon_dp_aux_transfer_atom(struct drm_d
 		return -E2BIG;
 
 	tx_buf[0] = msg->address & 0xff;
-	tx_buf[1] = msg->address >> 8;
-	tx_buf[2] = msg->request << 4;
+	tx_buf[1] = (msg->address >> 8) & 0xff;
+	tx_buf[2] = (msg->request << 4) |
+		((msg->address >> 16) & 0xf);
 	tx_buf[3] = msg->size ? (msg->size - 1) : 0;
 
 	switch (msg->request & ~DP_AUX_I2C_MOT) {

Patches currently in stable-queue which might be from [email protected] are

queue-4.2/drm-radeon-atom-send-out-the-full-aux-address.patch queue-4.2/drm-i915-check-dp-link-status-on-long-hpd-too.patch queue-4.2/drm-i915-allow-dsi-dual-link-to-be-configured-on-any-pipe.patch