linux-kernel - [PATCH v2] mod_devicetable: Bump auxiliary_device

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Message-Id: <20251106052838.433673-1-raag.jadav@intel.com>
Date: Thu,  6 Nov 2025 10:58:38 +0530
From: Raag Jadav <raag.jadav@...el.com>
To: kees@...nel.org,
	broonie@...nel.org,
	gregkh@...uxfoundation.org,
	arnd@...db.de,
	andriy.shevchenko@...ux.intel.com,
	hansg@...nel.org,
	ilpo.jarvinen@...ux.intel.com,
	linus.walleij@...aro.org,
	brgl@...ev.pl
Cc: platform-driver-x86@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Raag Jadav <raag.jadav@...el.com>
Subject: [PATCH v2] mod_devicetable: Bump auxiliary_device_id name size

We have an upcoming driver named "intel_ehl_pse_io". This creates an
auxiliary child device for it's GPIO sub-functionality, which matches
against "intel_ehl_pse_io.gpio-elkhartlake" and overshoots the current
maximum limit of 32 bytes for auxiliary device id string. Bump the size
to 40 bytes to satisfy such cases.

Suggested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Raag Jadav <raag.jadav@...el.com>
---
v2: Describe the use case (Greg, Andy)

Triggered by [1].

[1] https://lore.kernel.org/r/aQSwWLVKH_3TthTW@smile.fi.intel.com

 include/linux/mod_devicetable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 6077972e8b45..24eb5a88a5c5 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -867,7 +867,7 @@ struct mhi_device_id {
 	kernel_ulong_t driver_data;
 };
 
-#define AUXILIARY_NAME_SIZE 32
+#define AUXILIARY_NAME_SIZE 40
 #define AUXILIARY_MODULE_PREFIX "auxiliary:"
 
 struct auxiliary_device_id {
-- 
2.34.1