FAILED: patch "[PATCH] drm/ast: Set DDC timeout in milliseconds" failed to apply to 5.10-stable tree

FAILED: patch "[PATCH] drm/ast: Set DDC timeout in milliseconds" failed to apply to 5.10-stable tree

[gregkh]

The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y
git checkout FETCH_HEAD
git cherry-pick -x c0cd6925856f661e1a37278660ccae551cef7077
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2024061925-devouring-nursing-e427@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^..

Possible dependencies:

c0cd6925856f ("drm/ast: Set DDC timeout in milliseconds")
42f4980da575 ("drm/ast: Rename struct ast_i2c_chan to struct ast_ddc")
0a7f04b433fc ("drm/ast: Move DDC code to ast_ddc.{c,h}")
e14ab3037383 ("drm/ast: Allocate instance of struct ast_i2c_chan with managed helpers")
c0af492c872b ("drm/ast: Remove struct ast_{vga,sil165}_connector")
d66cdb638a49 ("drm/ast: Fail probing if DDC channel could not be initialized")
ed8d84530ab0 ("Merge tag 'i2c-for-6.8-rc1-rebased' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From c0cd6925856f661e1a37278660ccae551cef7077 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Wed, 3 Apr 2024 12:31:28 +0200
Subject: [PATCH] drm/ast: Set DDC timeout in milliseconds

Compute the i2c timeout in jiffies from a value in milliseconds. The
original values of 2 jiffies equals 2 milliseconds if HZ has been
configured to a value of 1000. This corresponds to 2.2 milliseconds
used by most other DRM drivers. Update ast accordingly.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: 312fec1405dd ("drm: Initial KMS driver for AST (ASpeed Technologies) 2000 series (v2)")
Cc: Dave Airlie <airlied@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v3.5+
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240403103325.30457-2-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/ast/ast_ddc.c b/drivers/gpu/drm/ast/ast_ddc.c
index b7718084422f..3e156a6b6831 100644
--- a/drivers/gpu/drm/ast/ast_ddc.c
+++ b/drivers/gpu/drm/ast/ast_ddc.c
@@ -153,7 +153,7 @@ struct ast_ddc *ast_ddc_create(struct ast_device *ast)
 
 	bit = &ddc->bit;
 	bit->udelay = 20;
-	bit->timeout = 2;
+	bit->timeout = usecs_to_jiffies(2200);
 	bit->data = ddc;
 	bit->setsda = ast_ddc_algo_bit_data_setsda;
 	bit->setscl = ast_ddc_algo_bit_data_setscl;