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([152.58.130.190]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2aeae34d93bsm25395405ad.43.2026.03.11.07.24.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Mar 2026 07:24:20 -0700 (PDT) From: Anas Iqbal 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 Subject: [PATCH] staging: fbtft: fb_tinylcd: replace udelay() with usleep_range() Date: Wed, 11 Mar 2026 14:24:07 +0000 Message-ID: <20260311142407.35403-1-mohd.abd.6602@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Wed, 11 Mar 2026 21:39:34 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Replace udelay() with usleep_range() for a 250 microsecond delay as recommended by checkpatch.pl. usleep_range() avoids busy waiting and allows the scheduler to schedule other tasks. Signed-off-by: Anas Iqbal --- drivers/staging/fbtft/fb_tinylcd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/fbtft/fb_tinylcd.c b/drivers/staging/fbtft/fb_tinylcd.c index 9469248f2c50..51e6493b050f 100644 --- a/drivers/staging/fbtft/fb_tinylcd.c +++ b/drivers/staging/fbtft/fb_tinylcd.c @@ -38,10 +38,10 @@ static int init_display(struct fbtft_par *par) write_reg(par, 0xE5, 0x00); write_reg(par, 0xF0, 0x36, 0xA5, 0x53); write_reg(par, 0xE0, 0x00, 0x35, 0x33, 0x00, 0x00, 0x00, - 0x00, 0x35, 0x33, 0x00, 0x00, 0x00); + 0x00, 0x35, 0x33, 0x00, 0x00, 0x00); write_reg(par, MIPI_DCS_SET_PIXEL_FORMAT, 0x55); write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE); - udelay(250); + usleep_range(250, 500); write_reg(par, MIPI_DCS_SET_DISPLAY_ON); return 0; -- 2.43.0