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From: Arend Van Spriel <arend.vanspriel@broadcom.com>
To: "Kuan-Wei Chiu" <visitorckw@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>, <tglx@linutronix.de>,
	<mingo@redhat.com>,  <bp@alien8.de>,
	<dave.hansen@linux.intel.com>, <x86@kernel.org>,  <jk@ozlabs.org>,
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	 Yu-Chun Lin <eleanor15x@gmail.com>
Subject: Re: [PATCH v4 03/13] media: pci: cx18-av-vbi: Replace open-coded parity calculation with parity_odd()
Date: Fri, 11 Apr 2025 19:04:43 +0200	[thread overview]
Message-ID: <19625cf93f8.279b.9b12b7fc0a3841636cfb5e919b41b954@broadcom.com> (raw)
In-Reply-To: <Z/lFQ85vhSQiFDBm@visitorckw-System-Product-Name>

On April 11, 2025 6:37:35 PM Kuan-Wei Chiu <visitorckw@gmail.com> wrote:

> On Thu, Apr 10, 2025 at 07:08:58AM +0200, Arend Van Spriel wrote:
>> On April 10, 2025 12:06:52 AM Johannes Berg <johannes@sipsolutions.net> wrote:
>>
>>> On Wed, 2025-04-09 at 20:43 +0200, Arend van Spriel wrote:
>>>>
>>>> This is orthogonal to the change to parity_odd() though. More specific
>>>> to the new parity_odd() you can now do following as parity_odd()
>>>> argument is u64:
>>>>
>>>> err = !parity_odd(*(u16 *)p);
>>>
>>> Can it though? Need to be careful with alignment with that, I'd think.
>>
>> My bad. You are absolutely right.
> Then maybe we can still go with:
>
> err = !parity_odd(p[0] ^ p[1]);
>
> I believe this should still be a fairly safe approach?

Yes. Or whatever the name will be ;-)

Regards,
Arend



  reply	other threads:[~2025-04-11 17:05 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-09 15:43 [PATCH v4 00/13] Introduce parity_odd() and refactor redundant parity code Kuan-Wei Chiu
2025-04-09 15:43 ` [PATCH v4 01/13] bitops: Change parity8() to parity_odd() with u64 input and bool return type Kuan-Wei Chiu
2025-04-09 16:59   ` Yury Norov
2025-04-09 18:25     ` Kuan-Wei Chiu
2025-04-09 18:39       ` Guenter Roeck
2025-04-09 19:21         ` Kuan-Wei Chiu
2025-04-09 15:43 ` [PATCH v4 02/13] media: media/test_drivers: Replace open-coded parity calculation with parity_odd() Kuan-Wei Chiu
2025-04-09 17:03   ` Yury Norov
2025-04-09 18:23     ` Kuan-Wei Chiu
2025-04-09 18:41       ` Yury Norov
2025-04-09 18:56         ` Kuan-Wei Chiu
2025-04-10 15:07           ` Yury Norov
2025-04-25  8:33   ` Hans Verkuil
2025-04-09 15:43 ` [PATCH v4 03/13] media: pci: cx18-av-vbi: " Kuan-Wei Chiu
2025-04-09 18:43   ` Arend van Spriel
2025-04-09 18:59     ` Kuan-Wei Chiu
2025-04-25  8:51       ` Hans Verkuil
2025-04-09 22:06     ` Johannes Berg
2025-04-10  5:08       ` Arend Van Spriel
2025-04-11 16:37         ` Kuan-Wei Chiu
2025-04-11 17:04           ` Arend Van Spriel [this message]
2025-04-09 15:43 ` [PATCH v4 04/13] media: saa7115: " Kuan-Wei Chiu
2025-04-25  8:51   ` Hans Verkuil
2025-04-09 15:43 ` [PATCH v4 05/13] serial: max3100: " Kuan-Wei Chiu
2025-04-09 17:24   ` Yury Norov
2025-04-09 18:30     ` Kuan-Wei Chiu
2025-04-09 15:43 ` [PATCH v4 06/13] lib/bch: " Kuan-Wei Chiu
2025-04-09 15:43 ` [PATCH v4 07/13] Input: joystick - " Kuan-Wei Chiu
2025-04-09 19:23   ` Dmitry Torokhov
2025-04-09 15:43 ` [PATCH v4 08/13] net: ethernet: oa_tc6: " Kuan-Wei Chiu
2025-04-09 15:43 ` [PATCH v4 09/13] wifi: brcm80211: " Kuan-Wei Chiu
2025-04-15 16:13   ` Simon Horman
2025-04-09 15:43 ` [PATCH v4 10/13] drm/bridge: dw-hdmi: " Kuan-Wei Chiu
2025-04-09 15:43 ` [PATCH v4 11/13] mtd: ssfdc: " Kuan-Wei Chiu
2025-04-09 15:43 ` [PATCH v4 12/13] fsi: i2cr: " Kuan-Wei Chiu
2025-04-09 15:43 ` [PATCH v4 13/13] nfp: bpf: " Kuan-Wei Chiu
2025-04-09 16:54 ` [PATCH v4 00/13] Introduce parity_odd() and refactor redundant parity code Yury Norov
2025-04-09 18:15   ` Kuan-Wei Chiu
2025-04-09 18:33     ` Yury Norov
2025-04-10  2:09       ` H. Peter Anvin
2025-04-11 16:34         ` Kuan-Wei Chiu
2025-04-25 19:33           ` H. Peter Anvin
2025-04-26  9:14             ` Kuan-Wei Chiu

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