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From: <gregkh@linuxfoundation.org>
To: hansg@kernel.org,andy@kernel.org,lee@kernel.org
Cc: <stable@vger.kernel.org>
Subject: FAILED: patch "[PATCH] mfd: intel_soc_pmic_chtdc_ti: Set use_single_read" failed to apply to 6.12-stable tree
Date: Mon, 13 Oct 2025 10:25:05 +0200	[thread overview]
Message-ID: <2025101305-cheek-copartner-c523@gregkh> (raw)


The patch below does not apply to the 6.12-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-6.12.y
git checkout FETCH_HEAD
git cherry-pick -x 64e0d839c589f4f2ecd2e3e5bdb5cee6ba6bade9
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2025101305-cheek-copartner-c523@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

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

From 64e0d839c589f4f2ecd2e3e5bdb5cee6ba6bade9 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hansg@kernel.org>
Date: Mon, 4 Aug 2025 15:32:40 +0200
Subject: [PATCH] mfd: intel_soc_pmic_chtdc_ti: Set use_single_read
 regmap_config flag

Testing has shown that reading multiple registers at once (for 10-bit
ADC values) does not work. Set the use_single_read regmap_config flag
to make regmap split these for us.

This should fix temperature opregion accesses done by
drivers/acpi/pmic/intel_pmic_chtdc_ti.c and is also necessary for
the upcoming drivers for the ADC and battery MFD cells.

Fixes: 6bac0606fdba ("mfd: Add support for Cherry Trail Dollar Cove TI PMIC")
Cc: stable@vger.kernel.org
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20250804133240.312383-1-hansg@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>

diff --git a/drivers/mfd/intel_soc_pmic_chtdc_ti.c b/drivers/mfd/intel_soc_pmic_chtdc_ti.c
index 4c1a68c9f575..6daf33e07ea0 100644
--- a/drivers/mfd/intel_soc_pmic_chtdc_ti.c
+++ b/drivers/mfd/intel_soc_pmic_chtdc_ti.c
@@ -82,6 +82,8 @@ static const struct regmap_config chtdc_ti_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = 0xff,
+	/* The hardware does not support reading multiple registers at once */
+	.use_single_read = true,
 };
 
 static const struct regmap_irq chtdc_ti_irqs[] = {


             reply	other threads:[~2025-10-13  8:25 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-13  8:25 gregkh [this message]
2025-10-13 22:36 ` [PATCH 6.12.y 1/3] mfd: intel_soc_pmic_chtdc_ti: Fix invalid regmap-config max_register value Sasha Levin
2025-10-13 22:36   ` [PATCH 6.12.y 2/3] mfd: intel_soc_pmic_chtdc_ti: Drop unneeded assignment for cache_type Sasha Levin
2025-10-13 22:36   ` [PATCH 6.12.y 3/3] mfd: intel_soc_pmic_chtdc_ti: Set use_single_read regmap_config flag Sasha Levin

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