Re: [PATCH] usb: phy: tegra: Use IS_ERR() to check and simplify code

From: Tang Bin
Date: Mon Sep 28 2020 - 04:47:37 EST


Hi all:

在 2020/9/24 18:37, Felipe Balbi 写道:
Thierry Reding <thierry.reding@xxxxxxxxx> writes:

On Thu, Sep 24, 2020 at 10:26:15AM +0300, Felipe Balbi wrote:
Tang Bin <tangbin@xxxxxxxxxxxxxxxxxxxx> writes:

Use IS_ERR() and PTR_ERR() instead of PTR_ERR_OR_ZERO() to
simplify code, avoid redundant judgements.

Signed-off-by: Zhang Shengju <zhangshengju@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Tang Bin <tangbin@xxxxxxxxxxxxxxxxxxxx>
Applied for next merge window. Make sure to get this driver out of
drivers/usb/phy and moved into drivers/phy ASAP.
Sergei had commented on this patch with valid concerns, see here in case
you don't have his reply in your inbox:

http://patchwork.ozlabs.org/project/linux-tegra/patch/20200910115607.11392-1-tangbin@xxxxxxxxxxxxxxxxxxxx/#2526208

I agree with those concerns. This patch is broken because it will output
the wrong error code on failure. I don't fully agree with Sergei's point
that this patch isn't worth redoing. I do like the idiomatic error
handling better, but I think we shouldn't be breaking the error messages
like this.
Sure thing, dropped for now.

Sorry, it's my fault.

Thanks

Tang Bin