linux-kernel - [PATCH] staging: fbtft: Changed calls to udelays() functions for usleep

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Message-Id: <20240922121213.4260-1-joakobar2000@gmail.com>
Date: Sun, 22 Sep 2024 09:12:13 -0300
From: Fabio <joakobar2000@...il.com>
To: dri-devel@...ts.freedesktop.org,
	linux-fbdev@...r.kernel.org,
	linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	gregkh@...uxfoundation.org
Subject: [PATCH] staging: fbtft: Changed calls to udelays() functions for usleep_range()

Replaced two lines of calling  udelays by usleep_range() functions, adding
more efficiency due to the need of long-lasting delays of more than 10us.

Signed-off-by: Fabio Bareiro <joakobar2000@...il.com>
---
 drivers/staging/fbtft/fb_ra8875.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fb_ra8875.c b/drivers/staging/fbtft/fb_ra8875.c
index 0ab1de6647d0..edd467c6bf1a 100644
--- a/drivers/staging/fbtft/fb_ra8875.c
+++ b/drivers/staging/fbtft/fb_ra8875.c
@@ -210,7 +210,7 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
 	}
 	len--;
 
-	udelay(100);
+	usleep_range(100, 150);
 
 	if (len) {
 		buf = (u8 *)par->buf;
@@ -231,7 +231,7 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...)
 
 	/* restore user spi-speed */
 	par->fbtftops.write = fbtft_write_spi;
-	udelay(100);
+	usleep_range(100, 150);
 }
 
 static int write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
-- 
2.34.1