From: Anas Iqbal <mohd.abd.6602@gmail.com>
To: andy@kernel.org, gregkh@linuxfoundation.org
Cc: linux-staging@lists.linux.dev, dri-devel@lists.freedesktop.org,
linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Anas Iqbal <mohd.abd.6602@gmail.com>
Subject: [PATCH] staging: fbtft: fb_ra8875: replace udelay() with usleep_range()
Date: Wed, 11 Mar 2026 13:52:45 +0000 [thread overview]
Message-ID: <20260311135245.32730-1-mohd.abd.6602@gmail.com> (raw)
Replace udelay() with usleep_range() for 100 microsecond delays as
recommended by checkpatch.pl. usleep_range() avoids busy waiting and
allows the scheduler to run other tasks.
Signed-off-by: Anas Iqbal <mohd.abd.6602@gmail.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..d2400bb44f1c 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, 200);
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, 200);
}
static int write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
--
2.43.0
next reply other threads:[~2026-03-11 13:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-11 13:52 Anas Iqbal [this message]
2026-03-11 14:23 ` [PATCH] staging: fbtft: fb_ra8875: replace udelay() with usleep_range() Greg KH
2026-03-11 15:57 ` Andy Shevchenko
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