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rtc: pcf2127: fix SPI command byte for PCF2131 backport

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When commit fa78e9b606 upstream was
backported to LTS branches linux-6.12.y and linux-6.6.y, the SPI regmap
config fix got applied to the I2C regmap config. Most likely due to a new
RTC get/set parm feature introduced in 6.14 causing regmap config sections
in the buttom of the driver to move. LTS branch linux-6.1.y and earlier
does not have PCF2131 device support.

Issue can be seen in buttom of this diff in stable/linux.git tree:
git diff master..linux-6.12.y -- drivers/rtc/rtc-pcf2127.c

Fixes: ee61aec852 ("rtc: pcf2127: fix SPI command byte for PCF2131")
Fixes: 5cdd1f7340 ("rtc: pcf2127: fix SPI command byte for PCF2131")
Cc: stable@vger.kernel.org
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Elena Popa <elena.popa@nxp.com>
Cc: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bruno Thomsen 2025-08-20 21:30:16 +02:00 committed by Greg Kroah-Hartman
parent 075abf0b1a
commit 3ef938f6f0
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/rtc/rtc-pcf2127.c
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@ -1383,11 +1383,6 @@ static int pcf2127_i2c_probe(struct i2c_client *client)
variant = &pcf21xx_cfg[type];
}
if (variant->type == PCF2131) {
config.read_flag_mask = 0x0;
config.write_flag_mask = 0x0;
}
config.max_register = variant->max_register,
regmap = devm_regmap_init(&client->dev, &pcf2127_i2c_regmap,
@ -1461,6 +1456,11 @@ static int pcf2127_spi_probe(struct spi_device *spi)
variant = &pcf21xx_cfg[type];
}
if (variant->type == PCF2131) {
config.read_flag_mask = 0x0;
config.write_flag_mask = 0x0;
}
config.max_register = variant->max_register;
regmap = devm_regmap_init_spi(spi, &config);