From: boris.brezillon@free-electrons.com (Boris Brezillon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 09/14] mtd: nand: sunxi: simplify optional reset handling
Date: Mon, 30 Jan 2017 13:44:27 +0100 [thread overview]
Message-ID: <20170130134427.14487373@bbrezillon> (raw)
In-Reply-To: <20170130114116.22089-9-p.zabel@pengutronix.de>
Hi Philipp,
On Mon, 30 Jan 2017 12:41:11 +0100
Philipp Zabel <p.zabel@pengutronix.de> wrote:
> As of commit bb475230b8e5 ("reset: make optional functions really
> optional"), the reset framework API calls use NULL pointers to describe
> optional, non-present reset controls.
>
> This allows to return errors from devm_reset_control_get_optional and to
> call reset_control_(de)assert unconditionally.
>
> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> Cc: Icenowy Zheng <icenowy@aosc.xyz>
> Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
> Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
I didn't find commit bb475230b8e5 in mainline, so I guess you plan to
take this patch in your own tree. Let me know if this is not the case.
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
> ---
> drivers/mtd/nand/sunxi_nand.c | 19 ++++++++-----------
> 1 file changed, 8 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c
> index e40482a65de66..c6769b52c666a 100644
> --- a/drivers/mtd/nand/sunxi_nand.c
> +++ b/drivers/mtd/nand/sunxi_nand.c
> @@ -2196,16 +2196,15 @@ static int sunxi_nfc_probe(struct platform_device *pdev)
> goto out_ahb_clk_unprepare;
>
> nfc->reset = devm_reset_control_get_optional(dev, "ahb");
> - if (!IS_ERR(nfc->reset)) {
> - ret = reset_control_deassert(nfc->reset);
> - if (ret) {
> - dev_err(dev, "reset err %d\n", ret);
> - goto out_mod_clk_unprepare;
> - }
> - } else if (PTR_ERR(nfc->reset) != -ENOENT) {
> + if (IS_ERR(nfc->reset)) {
> ret = PTR_ERR(nfc->reset);
> goto out_mod_clk_unprepare;
> }
> + ret = reset_control_deassert(nfc->reset);
> + if (ret) {
> + dev_err(dev, "reset err %d\n", ret);
> + goto out_mod_clk_unprepare;
> + }
>
> ret = sunxi_nfc_rst(nfc);
> if (ret)
> @@ -2246,8 +2245,7 @@ static int sunxi_nfc_probe(struct platform_device *pdev)
> if (nfc->dmac)
> dma_release_channel(nfc->dmac);
> out_ahb_reset_reassert:
> - if (!IS_ERR(nfc->reset))
> - reset_control_assert(nfc->reset);
> + reset_control_assert(nfc->reset);
> out_mod_clk_unprepare:
> clk_disable_unprepare(nfc->mod_clk);
> out_ahb_clk_unprepare:
> @@ -2262,8 +2260,7 @@ static int sunxi_nfc_remove(struct platform_device *pdev)
>
> sunxi_nand_chips_cleanup(nfc);
>
> - if (!IS_ERR(nfc->reset))
> - reset_control_assert(nfc->reset);
> + reset_control_assert(nfc->reset);
>
> if (nfc->dmac)
> dma_release_channel(nfc->dmac);
next prev parent reply other threads:[~2017-01-30 12:44 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-30 11:41 [PATCH 01/14] crypto: sun4i-ss - simplify optional reset handling Philipp Zabel
2017-01-30 11:41 ` [PATCH 02/14] i2c: mv64xxx: " Philipp Zabel
2017-01-30 11:41 ` [PATCH 03/14] [media] coda: " Philipp Zabel
2017-01-30 11:41 ` [PATCH 04/14] [media] st_rc: " Philipp Zabel
2017-01-30 12:33 ` Patrice CHOTARD
2017-01-30 11:41 ` [PATCH 05/14] [media] rc: sunxi-cir: " Philipp Zabel
2017-01-30 11:41 ` [PATCH 06/14] mmc: dw_mmc: " Philipp Zabel
2017-01-31 11:52 ` Ulf Hansson
2017-01-31 17:21 ` Philipp Zabel
2017-01-30 11:41 ` [PATCH 07/14] mmc: sdhci-st: " Philipp Zabel
2017-01-30 11:41 ` [PATCH 08/14] mmc: sunxi: " Philipp Zabel
2017-01-31 3:50 ` Chen-Yu Tsai
2017-01-30 11:41 ` [PATCH 09/14] mtd: nand: " Philipp Zabel
2017-01-30 12:44 ` Boris Brezillon [this message]
2017-01-31 17:20 ` Philipp Zabel
2017-01-31 17:21 ` Philipp Zabel
2017-01-30 11:41 ` [PATCH 10/14] phy: meson8b-usb2: " Philipp Zabel
2017-02-14 23:36 ` Martin Blumenstingl
2017-02-15 16:43 ` Jerome Brunet
2017-02-15 16:52 ` Philipp Zabel
2017-01-30 11:41 ` [PATCH 11/14] serial: 8250_dw: " Philipp Zabel
2017-02-02 22:21 ` Andy Shevchenko
2017-02-07 16:48 ` Philipp Zabel
2017-02-07 16:48 ` Philipp Zabel
2017-01-30 11:41 ` [PATCH 12/14] usb: dwc2: " Philipp Zabel
2017-01-31 0:28 ` John Youn
2017-01-31 0:39 ` John Youn
2017-04-10 10:21 ` Felipe Balbi
2017-04-10 10:36 ` Philipp Zabel
2017-04-10 11:23 ` Felipe Balbi
2017-01-30 11:41 ` [PATCH 13/14] usb: host: ehci-st: " Philipp Zabel
2017-01-30 11:41 ` [PATCH 14/14] ASoC: sunxi: " Philipp Zabel
2017-01-30 12:30 ` Mark Brown
2017-01-30 13:45 ` Philipp Zabel
2017-01-31 3:49 ` Chen-Yu Tsai
2017-01-31 21:00 ` Mark Brown
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=20170130134427.14487373@bbrezillon \
--to=boris.brezillon@free-electrons.com \
--cc=linux-arm-kernel@lists.infradead.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;
as well as URLs for NNTP newsgroup(s).