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power sequencing fixes for v7.3

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- with the PCIe code reworked to power the endpoint via pwrctl before it
   starts the link training, we can now remove the workaround for WLAN
   power which instead started causing an issue with endpoint enumeration
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Merge tag 'pwrseq-fixes-for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull power sequencing fix from Bartosz Golaszewski:

 - with the PCIe code reworked to power the endpoint via pwrctl before
   it starts the link training, we can now remove the workaround for
   WLAN power which instead started causing an issue with endpoint
   enumeration

* tag 'pwrseq-fixes-for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  power: sequencing: qcom-wcn: power off WLAN at probe
This commit is contained in:
Linus Torvalds 2026-10-16 08:17:30 -07:00
commit 7b441fe5a6
1 changed files with 1 additions and 15 deletions
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16
drivers/power/sequencing/pwrseq-qcom-wcn.c
View File

@ -496,15 +496,8 @@ static int pwrseq_qcom_wcn_probe(struct platform_device *pdev)
return dev_err_probe(dev, PTR_ERR(ctx->bt_gpio),
"Failed to get the Bluetooth enable GPIO\n");
/*
* FIXME: This should actually be GPIOD_OUT_LOW, but doing so would
* cause the WLAN power to be toggled, resulting in PCIe link down.
* Since the PCIe controller driver is not handling link down currently,
* the device becomes unusable. So we need to keep this workaround until
* the link down handling is implemented in the controller driver.
*/
ctx->wlan_gpio = devm_gpiod_get_optional(dev, "wlan-enable",
GPIOD_ASIS);
GPIOD_OUT_LOW);
if (IS_ERR(ctx->wlan_gpio))
return dev_err_probe(dev, PTR_ERR(ctx->wlan_gpio),
"Failed to get the WLAN enable GPIO\n");
@ -515,13 +508,6 @@ static int pwrseq_qcom_wcn_probe(struct platform_device *pdev)
return dev_err_probe(dev, PTR_ERR(ctx->xo_clk_gpio),
"Failed to get the XO_CLK GPIO\n");
/*
* Set direction to output but keep the current value in order to not
* disable the WLAN module accidentally if it's already powered on.
*/
gpiod_direction_output(ctx->wlan_gpio,
gpiod_get_value_cansleep(ctx->wlan_gpio));
ctx->clk = devm_clk_get_optional(dev, NULL);
if (IS_ERR(ctx->clk))
return dev_err_probe(dev, PTR_ERR(ctx->clk),