staging: fbtft: fb_tinylcd: replace udelay() with fsleep()

fsleep() is the preferred modern API for flexible sleeping as it
automatically selects the best sleep mechanism based on the duration.
Replace udelay() with fsleep() to improve power efficiency.

init_display() is a driver initialization callback which runs in
sleeping context, so fsleep() is safe to use here.

Signed-off-by: Tomasz Unger <tomasz.unger@yahoo.pl>
Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Link: https://patch.msgid.link/20260219142942.74087-1-tomasz.unger@yahoo.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/fbtft/fb_tinylcd.c b/drivers/staging/fbtft/fb_tinylcd.c
index fc17e3c687fbbb3ca747e08b43e425d7521ff1db..afa8f1c740c568ae675ab1e658c73e75edbf3b8b 100644 (file)
--- a/drivers/staging/fbtft/fb_tinylcd.c
+++ b/drivers/staging/fbtft/fb_tinylcd.c
@@ -41,7 +41,7 @@ static int init_display(struct fbtft_par *par)
                       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);
+       fsleep(250);
        write_reg(par, MIPI_DCS_SET_DISPLAY_ON);
 
        return 0;