From: Catalin Marinas <catalin.marinas@arm.com>
To: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: mark.rutland@arm.com, Suzuki K Poulose <suzuki.poulose@arm.com>,
linux-kernel@vger.kernel.org, Mark Brown <broonie@kernel.org>,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH V2] arm64/cpufeature: Add get_arm64_ftr_reg_nowarn()
Date: Tue, 26 May 2020 16:01:35 +0100 [thread overview]
Message-ID: <20200526150135.GI17051@gaia> (raw)
In-Reply-To: <1590500353-28082-1-git-send-email-anshuman.khandual@arm.com>
On Tue, May 26, 2020 at 07:09:13PM +0530, Anshuman Khandual wrote:
> @@ -632,8 +654,6 @@ static void __init init_cpu_ftr_reg(u32 sys_reg, u64 new)
> const struct arm64_ftr_bits *ftrp;
> struct arm64_ftr_reg *reg = get_arm64_ftr_reg(sys_reg);
>
> - BUG_ON(!reg);
> -
> for (ftrp = reg->ftr_bits; ftrp->width; ftrp++) {
> u64 ftr_mask = arm64_ftr_mask(ftrp);
> s64 ftr_new = arm64_ftr_value(ftrp, new);
> @@ -762,7 +782,6 @@ static int check_update_ftr_reg(u32 sys_id, int cpu, u64 val, u64 boot)
> {
> struct arm64_ftr_reg *regp = get_arm64_ftr_reg(sys_id);
>
> - BUG_ON(!regp);
> update_cpu_ftr_reg(regp, val);
> if ((boot & regp->strict_mask) == (val & regp->strict_mask))
> return 0;
> @@ -776,9 +795,6 @@ static void relax_cpu_ftr_reg(u32 sys_id, int field)
> const struct arm64_ftr_bits *ftrp;
> struct arm64_ftr_reg *regp = get_arm64_ftr_reg(sys_id);
>
> - if (WARN_ON(!regp))
> - return;
I think Will wanted an early return in all these functions not just
removing the BUG_ON(). I'll let him clarify.
--
Catalin
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-05-26 15:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-26 13:39 [PATCH V2] arm64/cpufeature: Add get_arm64_ftr_reg_nowarn() Anshuman Khandual
2020-05-26 14:04 ` Suzuki K Poulose
2020-05-26 14:03 ` Anshuman Khandual
2020-05-26 15:01 ` Catalin Marinas [this message]
2020-05-26 19:46 ` Will Deacon
2020-05-27 2:26 ` Anshuman Khandual
2020-05-27 7:53 ` Will Deacon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200526150135.GI17051@gaia \
--to=catalin.marinas@arm.com \
--cc=anshuman.khandual@arm.com \
--cc=broonie@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=suzuki.poulose@arm.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox