github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-11-06 21:58:01 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

hwmon: (spd5118) Avoid probing when 16-bit addressing is enabled

Browse Source 
Support for 16-bit addressing was removed when support for i3c
was added to the driver. Switching between 8-bit and 16-bit addressing
might confuse the system firmware, so we are forced to bail out if
16-bit addressing was configured during boot.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260901200142.495319-2-W_Armin@gmx.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Armin Wolf 2026-09-01 22:01:42 +02:00 committed by Guenter Roeck
parent d2e24a5bc9
commit 720e4bd86c
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/hwmon/spd5118.c
View File

@ -16,6 +16,7 @@
#include <linux/bitops.h>
#include <linux/bits.h>
#include <linux/dev_printk.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/i3c/device.h>
@ -664,6 +665,13 @@ static int spd5118_i2c_init(struct i2c_client *client)
if (mode < 0)
return mode;
/* 16-bit addressing is not supported */
if (mode & SPD5118_LEGACY_MODE_ADDR) {
dev_notice(&client->dev,
"Unable to access device due to 16-bit addressing being enabled\n");
return -ENODEV;
}
err = i2c_smbus_write_byte_data(client, SPD5118_REG_I2C_LEGACY_MODE,
mode & ~SPD5118_LEGACY_PAGE_MASK);
if (err < 0)