netdev - [PATCH net v3 5/5] r8152: Add RTL8152_INACCESSIBLE to r8153_aldps

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Date: Wed, 29 Nov 2023 13:25:24 -0800
From: Douglas Anderson <dianders@...omium.org>
To: Jakub Kicinski <kuba@...nel.org>,
	Hayes Wang <hayeswang@...ltek.com>,
	"David S . Miller" <davem@...emloft.net>
Cc: linux-usb@...r.kernel.org,
	Grant Grundler <grundler@...omium.org>,
	Laura Nao <laura.nao@...labora.com>,
	Edward Hill <ecgh@...omium.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Simon Horman <horms@...nel.org>,
	Douglas Anderson <dianders@...omium.org>,
	Bjørn Mork <bjorn@...k.no>,
	Eric Dumazet <edumazet@...gle.com>,
	Paolo Abeni <pabeni@...hat.com>,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH net v3 5/5] r8152: Add RTL8152_INACCESSIBLE to r8153_aldps_en()

Delay loops in r8152 should break out if RTL8152_INACCESSIBLE is set
so that they don't delay too long if the device becomes
inaccessible. Add the break to the loop in r8153_aldps_en().

Fixes: 4214cc550bf9 ("r8152: check if disabling ALDPS is finished")
Reviewed-by: Grant Grundler <grundler@...omium.org>
Signed-off-by: Douglas Anderson <dianders@...omium.org>
---

(no changes since v2)

Changes in v2:
- Added Fixes tag to RTL8152_INACCESSIBLE patches.
- Split RTL8152_INACCESSIBLE patches by the commit the loop came from.

 drivers/net/usb/r8152.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 3958eb622d47..fcdc9ba0f826 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -5803,6 +5803,8 @@ static void r8153_aldps_en(struct r8152 *tp, bool enable)
 		data &= ~EN_ALDPS;
 		ocp_reg_write(tp, OCP_POWER_CFG, data);
 		for (i = 0; i < 20; i++) {
+			if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
+				return;
 			usleep_range(1000, 2000);
 			if (ocp_read_word(tp, MCU_TYPE_PLA, 0xe000) & 0x0100)
 				break;
-- 
2.43.0.rc1.413.gea7ed67945-goog