The patch below does not apply to the 5.4-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-5.4.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 '2024061926-sneezing-goldfish-d02c@gregkh' --subject-prefix 'PATCH 5.4.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-tzimmer...
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;