From: Jason Gunthorpe <jgg@ziepe.ca>
To: Jarkko Sakkinen <jarkko@kernel.org>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Peter Huewe" <peterhuewe@gmx.de>,
linux-integrity@vger.kernel.org, kernel@pengutronix.de
Subject: Re: [PATCH] char: tpm: cr50_i2c: Drop if with an always false condition
Date: Tue, 26 Apr 2022 08:35:41 -0300 [thread overview]
Message-ID: <20220426113541.GA64706@ziepe.ca> (raw)
In-Reply-To: <cf3df097d436c9b54c710401783667b56931b9b8.camel@kernel.org>
On Tue, Apr 26, 2022 at 07:35:29AM +0300, Jarkko Sakkinen wrote:
> Even if chip is expected not to be NULL, a sanity check costs nothing.
> As already said, this should be reviewed in the context of the callback
> change.
>
> Even then, the change should rather be:
>
> if (!chip) {
> dev_err(dev, "Could not get client data at remove\n");
> return;
> }
If it can't happen by design it should be deleted entirely, or be
turned into a WARN_ON:
if (WARN_ON(!chip))
return;
But I find this largely unnecessary as a null chip will reliably oops
later on in the same function.
Jason
next prev parent reply other threads:[~2022-04-26 11:35 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-12 22:53 [PATCH] char: tpm: cr50_i2c: Drop if with an always false condition Uwe Kleine-König
2021-11-13 10:53 ` Jarkko Sakkinen
2021-11-13 21:53 ` Uwe Kleine-König
2021-11-16 15:55 ` Jarkko Sakkinen
2021-11-16 17:30 ` Uwe Kleine-König
2022-03-31 13:22 ` Uwe Kleine-König
2022-04-25 19:11 ` Uwe Kleine-König
2022-04-26 4:35 ` Jarkko Sakkinen
2022-04-26 8:06 ` [PATCH] char: tpm: cr50_i2c: Suppress duplicated error message in .remove() Uwe Kleine-König
2022-05-04 3:53 ` Jarkko Sakkinen
2022-05-04 4:06 ` Jarkko Sakkinen
2022-04-26 11:35 ` Jason Gunthorpe [this message]
2022-05-04 4:02 ` [PATCH] char: tpm: cr50_i2c: Drop if with an always false condition Jarkko Sakkinen
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