From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: liang.yang@amlogic.com, linux-amlogic@lists.infradead.org,
linux-mtd@lists.infradead.org, richard@nod.at,
miquel.raynal@bootlin.com
Cc: jianxin.pan@amlogic.com, bbrezillon@kernel.org,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
linux-kernel@vger.kernel.org, marek.vasut@gmail.com,
computersforpeace@gmail.com, dwmw2@infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] mtd: rawnand: meson: only initialize the RB completion once
Date: Fri, 12 Apr 2019 00:00:56 +0200 [thread overview]
Message-ID: <20190411220056.19109-5-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20190411220056.19109-1-martin.blumenstingl@googlemail.com>
Documentation/scheduler/completion.txt states:
Calling init_completion() on the same completion object twice is
most likely a bug as it re-initializes the queue to an empty queue and
enqueued tasks could get "lost" - use reinit_completion() in that case,
but be aware of other races.
Initialize nfc->completion in meson_nfc_probe using init_completion and
change the call in meson_nfc_queue_rb to reinit_completion so the logic
matches what the documentation suggests.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
drivers/mtd/nand/raw/meson_nand.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index 57cc4bd3f665..ea57ddcec41e 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -400,7 +400,7 @@ static int meson_nfc_queue_rb(struct meson_nfc *nfc, int timeout_ms)
cfg |= NFC_RB_IRQ_EN;
writel(cfg, nfc->reg_base + NFC_REG_CFG);
- init_completion(&nfc->completion);
+ reinit_completion(&nfc->completion);
/* use the max erase time as the maximum clock for waiting R/B */
cmd = NFC_CMD_RB | NFC_CMD_RB_INT
@@ -1380,6 +1380,7 @@ static int meson_nfc_probe(struct platform_device *pdev)
nand_controller_init(&nfc->controller);
INIT_LIST_HEAD(&nfc->chips);
+ init_completion(&nfc->completion);
nfc->dev = dev;
--
2.21.0
_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic
next prev parent reply other threads:[~2019-04-11 22:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-11 22:00 [PATCH 0/4] meson-nand: small code improvements Martin Blumenstingl
2019-04-11 22:00 ` [PATCH 1/4] mtd: rawnand: meson: use struct_size macro Martin Blumenstingl
2019-04-15 6:01 ` Liang Yang
2019-04-11 22:00 ` [PATCH 2/4] mtd: rawnand: meson: use of_property_count_elems_of_size helper Martin Blumenstingl
2019-04-15 6:02 ` Liang Yang
2019-04-11 22:00 ` [PATCH 3/4] mtd: rawnand: meson: use a void pointer for meson_nfc_dma_buffer_setup Martin Blumenstingl
2019-04-15 6:03 ` Liang Yang
2019-04-11 22:00 ` Martin Blumenstingl [this message]
2019-04-15 6:04 ` [PATCH 4/4] mtd: rawnand: meson: only initialize the RB completion once Liang Yang
2019-04-18 19:44 ` Martin Blumenstingl
2019-04-19 3:52 ` Liang Yang
2019-04-19 9:00 ` Miquel Raynal
2019-04-18 16:22 ` [PATCH 0/4] meson-nand: small code improvements Miquel Raynal
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=20190411220056.19109-5-martin.blumenstingl@googlemail.com \
--to=martin.blumenstingl@googlemail.com \
--cc=bbrezillon@kernel.org \
--cc=computersforpeace@gmail.com \
--cc=dwmw2@infradead.org \
--cc=jianxin.pan@amlogic.com \
--cc=liang.yang@amlogic.com \
--cc=linux-amlogic@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=marek.vasut@gmail.com \
--cc=miquel.raynal@bootlin.com \
--cc=richard@nod.at \
/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).