Re: [PATCH] usb: chipidea: ci_hdrc_imx: Fix -EPROBE_DEFER handling for phy

Hi Uwe,

On Thu, Nov 25, 2021 at 5:34 AM Uwe Kleine-König u.kleine-koenig@pengutronix.de wrote:

With an old style device tree using fsl,usbphy devm_usb_get_phy_by_phandle() returning ERR_PTR(-EPROBE_DEFER) results in ci->usb_phy = ERR_PTR(-EPROBE_DEFER) in the chipidea driver which then chokes on that with

    Unable to handle kernel paging request at virtual address fffffe93

Handle errors other then -ENODEV as was done before v5.15-rc5 in ci_hdrc_imx_probe().

Fixes: 8253a34bfae3 ("usb: chipidea: ci_hdrc_imx: Also search for 'phys' phandle") Cc: stable@vger.kernel.org Signed-off-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de

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Hello,

this patch became commit 8253a34bfae3278baca52fc1209b7c29270486ca in v5.15-rc5. On an i.MX25 I experience the following fault:

[ 2.248749] 8<--- cut here --- [ 2.259025] Unable to handle kernel paging request at virtual address fffffe93

Sorry for the breakage.

Dan has sent a fix for this: https://www.spinics.net/lists/linux-usb/msg219148.html