diff mbox series

[v3,5/8] phy: exynos5-usbdrd: gs101: ensure power is gated to SS phy in phy_exit()

Message ID 20241205-gs101-phy-lanes-orientation-phy-v3-5-32f721bed219@linaro.org (mailing list archive)
State New
Headers show
Series USB31DRD phy updates for Google Tensor gs101 (orientation & DWC3 rpm) | expand

Commit Message

André Draszik Dec. 5, 2024, 7:33 a.m. UTC
We currently don't gate the power to the SS phy in phy_exit().

Shuffle the code slightly to ensure the power is gated to the SS phy as
well.

Fixes: 32267c29bc7d ("phy: exynos5-usbdrd: support Exynos USBDRD 3.1 combo phy (HS & SS)")
CC: stable@vger.kernel.org # 6.11+
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: André Draszik <andre.draszik@linaro.org>

---
v2:
* add cc-stable and fixes tags (Krzysztof)
* collect tags
---
 drivers/phy/samsung/phy-exynos5-usbdrd.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

Comments

Greg KH Dec. 5, 2024, 8:04 a.m. UTC | #1
On Thu, Dec 05, 2024 at 07:33:16AM +0000, André Draszik wrote:
> We currently don't gate the power to the SS phy in phy_exit().
> 
> Shuffle the code slightly to ensure the power is gated to the SS phy as
> well.
> 
> Fixes: 32267c29bc7d ("phy: exynos5-usbdrd: support Exynos USBDRD 3.1 combo phy (HS & SS)")
> CC: stable@vger.kernel.org # 6.11+

Why is a patch 5/8 a stable thing?  If this is such an important bugfix,
it should be sent separately as a 1/1 patch, right?

thanks,

greg k-h
Vinod Koul Dec. 8, 2024, 3:39 p.m. UTC | #2
On 05-12-24, 09:04, Greg KH wrote:
> On Thu, Dec 05, 2024 at 07:33:16AM +0000, André Draszik wrote:
> > We currently don't gate the power to the SS phy in phy_exit().
> > 
> > Shuffle the code slightly to ensure the power is gated to the SS phy as
> > well.
> > 
> > Fixes: 32267c29bc7d ("phy: exynos5-usbdrd: support Exynos USBDRD 3.1 combo phy (HS & SS)")
> > CC: stable@vger.kernel.org # 6.11+
> 
> Why is a patch 5/8 a stable thing?  If this is such an important bugfix,
> it should be sent separately as a 1/1 patch, right?

Correct, one should move fixes to top of the series..
André Draszik Dec. 9, 2024, 9:54 a.m. UTC | #3
Hi Vinod,

On Sun, 2024-12-08 at 21:09 +0530, Vinod Koul wrote:
> On 05-12-24, 09:04, Greg KH wrote:
> > On Thu, Dec 05, 2024 at 07:33:16AM +0000, André Draszik wrote:
> > > We currently don't gate the power to the SS phy in phy_exit().
> > > 
> > > Shuffle the code slightly to ensure the power is gated to the SS phy as
> > > well.
> > > 
> > > Fixes: 32267c29bc7d ("phy: exynos5-usbdrd: support Exynos USBDRD 3.1 combo phy (HS & SS)")
> > > CC: stable@vger.kernel.org # 6.11+
> > 
> > Why is a patch 5/8 a stable thing?  If this is such an important bugfix,
> > it should be sent separately as a 1/1 patch, right?
> 
> Correct, one should move fixes to top of the series..

Thanks Vinod, and sorry for that - separated out as per Greg's
request here:
https://lore.kernel.org/all/20241205-gs101-usb-phy-fix-v4-1-0278809fb810@linaro.org/

Cheers,
Andre'
diff mbox series

Patch

diff --git a/drivers/phy/samsung/phy-exynos5-usbdrd.c b/drivers/phy/samsung/phy-exynos5-usbdrd.c
index 2a724d362c2d..c1ce6fdeef31 100644
--- a/drivers/phy/samsung/phy-exynos5-usbdrd.c
+++ b/drivers/phy/samsung/phy-exynos5-usbdrd.c
@@ -1296,14 +1296,17 @@  static int exynos5_usbdrd_gs101_phy_exit(struct phy *phy)
 	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);
 	int ret;
 
+	if (inst->phy_cfg->id == EXYNOS5_DRDPHY_UTMI) {
+		ret = exynos850_usbdrd_phy_exit(phy);
+		if (ret)
+			return ret;
+	}
+
+	exynos5_usbdrd_phy_isol(inst, true);
+
 	if (inst->phy_cfg->id != EXYNOS5_DRDPHY_UTMI)
 		return 0;
 
-	ret = exynos850_usbdrd_phy_exit(phy);
-	if (ret)
-		return ret;
-
-	exynos5_usbdrd_phy_isol(inst, true);
 	return regulator_bulk_disable(phy_drd->drv_data->n_regulators,
 				      phy_drd->regulators);
 }