linux-kernel - [PATCH] FBTFT: Changed delay function.

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Date:   Sun,  3 Nov 2019 09:40:03 -0600
From:   Rama Kumar <ramakumar.kanasundara@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     jeremy@...zel.net, nishadkamdar@...il.com,
        linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
        Rama Kumar <ramakumar.kanasundara@...il.com>
Subject: [PATCH] FBTFT: Changed delay function.


Hi,

Changed udelay() to usleep_range() based on the document in the path, "Documentation/timers/timers-howto.rst". It was suggested to use usleep_range() function for sleeping duration between 10us - 20 ms. original code used udelay() for sleeping 20 us.
 
---
drivers/staging/fbtft/fb_agm1264k-fl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c
index eeeeec97ad27..471a145e3c00 100644
--- a/drivers/staging/fbtft/fb_agm1264k-fl.c
+++ b/drivers/staging/fbtft/fb_agm1264k-fl.c
@@ -85,7 +85,7 @@ static void reset(struct fbtft_par *par)
 	dev_dbg(par->info->device, "%s()\n", __func__);
 
 	gpiod_set_value(par->gpio.reset, 0);
-	udelay(20);
+	usleep_range(20,20);
 	gpiod_set_value(par->gpio.reset, 1);
 	mdelay(120);
 }
-- 
Signed-off-by: Rama Kumar <ramakumar.kanasundara@...il.com>

Thanks,
Rama Kumar

2.17.1