[PATCH 5.18 0720/1095] phy: ti: tusb1210: Dont check for write errors when powering on

Greg Kroah-Hartman
2022-08-15T21:57:30Z

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit d4a0a189b72a7c98e4256292b18b67c69fbc9343 ]

On some platforms, like Intel Merrifield, the writing values during power on
may timeout:

tusb1210 dwc3.0.auto.ulpi: error -110 writing val 0x41 to reg 0x80
phy phy-dwc3.0.auto.ulpi.0: phy poweron failed --> -110
dwc3 dwc3.0.auto: error -ETIMEDOUT: failed to initialize core
dwc3: probe of dwc3.0.auto failed with error -110

which effectively fails the probe of the USB controller.
Drop the check as it was before the culprit commit (see Fixes tag).

Fixes: 09a3512681b3 ("phy: ti: tusb1210: Improve ulpi_read()/_write() error checking")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
Link: https://lore.kernel.org/r/20220613160848.82746-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/phy/ti/phy-tusb1210.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/ti/phy-tusb1210.c b/drivers/phy/ti/phy-tusb1210.c
index c3ab4b69ea68..669c13d6e402 100644
--- a/drivers/phy/ti/phy-tusb1210.c
+++ b/drivers/phy/ti/phy-tusb1210.c
@@ -105,8 +105,9 @@ static int tusb1210_power_on(struct phy *phy)
msleep(TUSB1210_RESET_TIME_MS);

/* Restore the optional eye diagram optimization value */
- return tusb1210_ulpi_write(tusb, TUSB1210_VENDOR_SPECIFIC2,
- tusb->vendor_specific2);
+ tusb1210_ulpi_write(tusb, TUSB1210_VENDOR_SPECIFIC2, tusb->vendor_specific2);
+
+ return 0;
}

static int tusb1210_power_off(struct phy *phy)
--
2.35.1