[PATCH AUTOSEL 6.12 09/21] ALSA: hda/realtek - Enable mute LED on HP Pavilion Laptop 15-eg100

[Sasha Levin <sashal@kernel.org>]

From: Yasmin Fitzgerald <sunoflife1.git@gmail.com>

[ Upstream commit 68cc9d3c8e44afe90e43cbbd2960da15c2f31e23 ]

The HP Pavilion Laptop 15-eg100 has Realtek HDA codec ALC287.
It needs the ALC287_FIXUP_HP_GPIO_LED quirk to enable the mute LED.

Signed-off-by: Yasmin Fitzgerald <sunoflife1.git@gmail.com>
Link: https://patch.msgid.link/20250621053832.52950-1-sunoflife1.git@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

**YES**

This commit should be backported to stable kernel trees for the
following reasons:

1. **Hardware enablement fix**: The commit adds a single line to the
   `alc269_fixup_tbl[]` quirk table to enable mute LED functionality on
   the HP Pavilion Laptop 15-eg100:
  ```c
  SND_PCI_QUIRK(0x103c, 0x898a, "HP Pavilion 15-eg100",
  ALC287_FIXUP_HP_GPIO_LED),
  ```

2. **Minimal and contained change**: This is a one-line addition that
   only affects the specific hardware identified by PCI subsystem ID
   (0x103c, 0x898a). There are no side effects on other systems.

3. **Uses established fixup**: The `ALC287_FIXUP_HP_GPIO_LED` fixup is
   already well-established in the kernel and used by other HP Pavilion
   models including:
   - HP Pavilion 15-eh1xxx (0x103c, 0x88d0)
   - HP Pavilion Aero Laptop 13-be0xxx (0x103c, 0x8919)
   - HP Pavilion 14-ec1xxx (0x103c, 0x8a0f)

4. **Fixes user-visible functionality**: Without this quirk, users of
   the HP Pavilion Laptop 15-eg100 would have a non-functional mute LED,
   which is an important visual feedback mechanism for audio state.

5. **Consistent with stable backport precedent**: All five similar
   historical commits that enabled mute LED functionality for HP laptops
   were backported to stable:
   - "Enable Mute LED on HP Laptop 14s-fq1xxx" (YES)
   - "Enable Mute LED on HP Laptop 14-fq0xxx" (YES)
   - "fix mute led of the HP Pavilion 15-eh1xxx series" (YES) - notably
     uses the same ALC287_FIXUP_HP_GPIO_LED
   - "Enable Mute LED on HP Laptop 15s-eq2xxx" (YES)
   - "Enable Mute LED on HP 255 G8" (YES)

6. **No risk of regression**: The change only applies to a specific
   hardware configuration and cannot affect other systems. The fixup
   mechanism is mature and the specific fixup being applied is already
   proven on other HP models.

This is a textbook example of a hardware enablement quirk that should be
backported to stable kernels to ensure users of the HP Pavilion Laptop
15-eg100 have properly functioning hardware across all supported kernel
versions.

 sound/pci/hda/patch_realtek.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 3dd7b822f8155..e6eb01d8e35a8 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -10655,6 +10655,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x103c, 0x8975, "HP EliteBook x360 840 Aero G9", ALC245_FIXUP_CS35L41_SPI_2_HP_GPIO_LED),
 	SND_PCI_QUIRK(0x103c, 0x897d, "HP mt440 Mobile Thin Client U74", ALC236_FIXUP_HP_GPIO_LED),
 	SND_PCI_QUIRK(0x103c, 0x8981, "HP Elite Dragonfly G3", ALC245_FIXUP_CS35L41_SPI_4),
+	SND_PCI_QUIRK(0x103c, 0x898a, "HP Pavilion 15-eg100", ALC287_FIXUP_HP_GPIO_LED),
 	SND_PCI_QUIRK(0x103c, 0x898e, "HP EliteBook 835 G9", ALC287_FIXUP_CS35L41_I2C_2),
 	SND_PCI_QUIRK(0x103c, 0x898f, "HP EliteBook 835 G9", ALC287_FIXUP_CS35L41_I2C_2),
 	SND_PCI_QUIRK(0x103c, 0x8991, "HP EliteBook 845 G9", ALC287_FIXUP_CS35L41_I2C_2_HP_GPIO_LED),
-- 
2.39.5