linux-kernel - [PATCH net-next] nfc: st95hf: switch to using sleeping variants of gpiod API

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Message-ID: <ZsPtCPwnXAyHG2Jq@google.com>
Date: Mon, 19 Aug 2024 18:10:32 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next] nfc: st95hf: switch to using sleeping variants of
 gpiod API

The driver does not not use gpiod API calls in an atomic context. Switch
to gpiod_set_value_cansleep() calls to allow using the driver with GPIO
controllers that might need process context to operate.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/nfc/st95hf/core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/nfc/st95hf/core.c b/drivers/nfc/st95hf/core.c
index ffe5b4eab457..5b3451fc4491 100644
--- a/drivers/nfc/st95hf/core.c
+++ b/drivers/nfc/st95hf/core.c
@@ -450,19 +450,19 @@ static int st95hf_select_protocol(struct st95hf_context *stcontext, int type)
 static void st95hf_send_st95enable_negativepulse(struct st95hf_context *st95con)
 {
 	/* First make irq_in pin high */
-	gpiod_set_value(st95con->enable_gpiod, HIGH);
+	gpiod_set_value_cansleep(st95con->enable_gpiod, HIGH);
 
 	/* wait for 1 milisecond */
 	usleep_range(1000, 2000);
 
 	/* Make irq_in pin low */
-	gpiod_set_value(st95con->enable_gpiod, LOW);
+	gpiod_set_value_cansleep(st95con->enable_gpiod, LOW);
 
 	/* wait for minimum interrupt pulse to make st95 active */
 	usleep_range(1000, 2000);
 
 	/* At end make it high */
-	gpiod_set_value(st95con->enable_gpiod, HIGH);
+	gpiod_set_value_cansleep(st95con->enable_gpiod, HIGH);
 }
 
 /*
-- 
2.46.0.184.g6999bdac58-goog


-- 
Dmitry