From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: James Hilliard <james.hilliard1@gmail.com>,
Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH v4 36/58] mtd: rawnand: renesas: retain open-handle state on removal
Date: Fri, 13 Nov 2026 21:01:00 +0100 [thread overview]
Message-ID: <avdsfFHl1Eoj-2i1@shikoro> (raw)
In-Reply-To: <20261113-submit-rawnand-retained-handle-lifetime-v1-v4-36-556b1d7c6221@gmail.com>
On Fri, Nov 13, 2026 at 11:14:52AM -0700, James Hilliard wrote:
> Keep chip metadata and controller storage alive until the final MTD
> reference is released. Unregister and disconnect each published chip
> before releasing the resources used by its hardware operations.
>
> Disconnect all chips before dropping runtime PM and transfer buffers.
>
> Run NAND cleanup during disconnection; the final core-owned put only
> releases retained allocation and layout data.
>
> Cc: linux-renesas-soc@vger.kernel.org
> Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
From what I understood from the coverletter, this seems valid.
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
@Miquel: can you test it? My RZ/N1 board doesn't have NAND.
WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
To: James Hilliard <james.hilliard1@gmail.com>,
Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH v4 36/58] mtd: rawnand: renesas: retain open-handle state on removal
Date: Fri, 13 Nov 2026 21:01:00 +0100 [thread overview]
Message-ID: <avdsfFHl1Eoj-2i1@shikoro> (raw)
In-Reply-To: <20261113-submit-rawnand-retained-handle-lifetime-v1-v4-36-556b1d7c6221@gmail.com>
On Fri, Nov 13, 2026 at 11:14:52AM -0700, James Hilliard wrote:
> Keep chip metadata and controller storage alive until the final MTD
> reference is released. Unregister and disconnect each published chip
> before releasing the resources used by its hardware operations.
>
> Disconnect all chips before dropping runtime PM and transfer buffers.
>
> Run NAND cleanup during disconnection; the final core-owned put only
> releases retained allocation and layout data.
>
> Cc: linux-renesas-soc@vger.kernel.org
> Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
From what I understood from the coverletter, this seems valid.
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
@Miquel: can you test it? My RZ/N1 board doesn't have NAND.
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Linux MTD discussion mailing list
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next prev parent reply other threads:[~2026-11-13 20:01 UTC|newest]
Thread overview: 125+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-13 18:14 [PATCH v4 00/58] mtd: rawnand: retain chip and controller state across removal James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 01/58] nvmem: disconnect provider callbacks before unregister returns James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 02/58] mtd: acquire an MTD handle from a referenced class device James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 03/58] mtd: separate class devices from retained backing objects James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 19:16 ` sashiko-bot
2026-11-13 18:14 ` [PATCH v4 04/58] mtd: retain virtual concatenations across component removal James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 05/58] mtd: rawnand: separate hardware disconnection from cleanup James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 06/58] mtd: rawnand: share retained chip and controller ownership James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 07/58] mtd: rawnand: sunxi: retain chip state until the final MTD put James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 08/58] mtd: rawnand: plat_nand: retain open-handle state on removal James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 09/58] mtd: rawnand: gpio: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 10/58] mtd: rawnand: stm32_fmc2: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 11/58] mtd: rawnand: denali: retain chips across controller removal James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 12/58] mtd: rawnand: arasan: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 13/58] mtd: rawnand: mxic: retain open-handle state on removal James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 14/58] mtd: rawnand: intel: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 15/58] mtd: rawnand: tegra: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 16/58] mtd: rawnand: mtk: retain chips across controller removal James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 17/58] mtd: rawnand: rockchip: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 18/58] mtd: rawnand: atmel: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 19/58] mtd: rawnand: orion: retain open-handle state on removal James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 20/58] mtd: rawnand: socrates: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 21/58] mtd: rawnand: fsl_upm: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 22/58] mtd: rawnand: pasemi: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 23/58] mtd: rawnand: ams-delta: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 24/58] mtd: rawnand: xway: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 25/58] mtd: rawnand: hisi504: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 26/58] mtd: rawnand: vf610: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 27/58] mtd: rawnand: technologic: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:39 ` sashiko-bot
2026-11-13 18:14 ` [PATCH v4 28/58] mtd: rawnand: loongson: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 29/58] mtd: rawnand: ma35d1: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 30/58] mtd: rawnand: pl35x: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 31/58] mtd: rawnand: mxc: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 32/58] mtd: rawnand: fsmc: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 33/58] mtd: rawnand: gpmi: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 34/58] mtd: rawnand: omap2: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 35/58] mtd: rawnand: marvell: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 36/58] mtd: rawnand: renesas: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 20:01 ` Wolfram Sang [this message]
2026-11-13 20:01 ` Wolfram Sang
2026-11-13 18:14 ` [PATCH v4 37/58] mtd: rawnand: meson: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 38/58] mtd: rawnand: cadence: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 39/58] mtd: rawnand: qcom: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 40/58] mtd: rawnand: cafe: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 41/58] mtd: rawnand: brcmnand: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 42/58] mtd: rawnand: au1550nd: retain chip state across removal James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:14 ` [PATCH v4 43/58] mtd: rawnand: sharpsl: " James Hilliard
2026-11-13 18:14 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 44/58] mtd: rawnand: davinci: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 45/58] mtd: rawnand: sh_flctl: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 46/58] mtd: rawnand: lpc32xx_slc: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 47/58] mtd: rawnand: lpc32xx_mlc: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 48/58] mtd: rawnand: ndfc: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 49/58] mtd: rawnand: txx9ndfmc: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 50/58] mtd: rawnand: ingenic: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 51/58] mtd: rawnand: mpc5121: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 52/58] mtd: rawnand: bcm47xxnflash: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 53/58] mtd: rawnand: fsl_elbc: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 54/58] mtd: rawnand: fsl_ifc: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 55/58] mtd: rawnand: r852: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 56/58] mtd: rawnand: nandsim: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 57/58] mtd: rawnand: cs553x: " James Hilliard
2026-11-13 18:15 ` James Hilliard
2026-11-13 18:15 ` [PATCH v4 58/58] mtd: rawnand: diskonchip: " James Hilliard
2026-11-13 18:15 ` James Hilliard
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