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serial: 8250: omap: convert to modern PM ops 

The new uart_write() function is only called from suspend/resume code, causing
a build warning when those are left out:

drivers/tty/serial/8250/8250_omap.c:169:13: error: 'uart_write' defined but not used [-Werror=unused-function]

Remove the #ifdefs and use the modern pm_ops/pm_sleep_ops and their wrappers
to let the compiler see where it's used but still drop the dead code.

Fixes: 398cecc248 ("serial: 8250: omap: Fix imprecise external abort for omap_8250_pm()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20230517202012.634386-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Arnd Bergmann 2023-05-17 22:20:07 +02:00 committed by Greg Kroah-Hartman
parent c53aab2076
commit ae62c49c0c
1 changed files with 5 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/tty/serial/8250/8250_omap.c
View File

@ -1595,7 +1595,6 @@ static int omap8250_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int omap8250_prepare(struct device *dev)
{
struct omap8250_priv *priv = dev_get_drvdata(dev);
@ -1640,12 +1639,7 @@ static int omap8250_resume(struct device *dev)
serial8250_resume_port(priv->line);
return 0;
}
#else
#define omap8250_prepare NULL
#define omap8250_complete NULL
#endif
#ifdef CONFIG_PM
static int omap8250_lost_context(struct uart_8250_port *up)
{
u32 val;
@ -1773,7 +1767,6 @@ static int omap8250_runtime_resume(struct device *dev)
schedule_work(&priv->qos_work);
return 0;
}
#endif
#ifdef CONFIG_SERIAL_8250_OMAP_TTYO_FIXUP
static int __init omap8250_console_fixup(void)
@ -1816,17 +1809,17 @@ console_initcall(omap8250_console_fixup);
#endif
static const struct dev_pm_ops omap8250_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(omap8250_suspend, omap8250_resume)
SET_RUNTIME_PM_OPS(omap8250_runtime_suspend,
SYSTEM_SLEEP_PM_OPS(omap8250_suspend, omap8250_resume)
RUNTIME_PM_OPS(omap8250_runtime_suspend,
omap8250_runtime_resume, NULL)
.prepare = omap8250_prepare,
.complete = omap8250_complete,
.prepare = pm_sleep_ptr(omap8250_prepare),
.complete = pm_sleep_ptr(omap8250_complete),
};
static struct platform_driver omap8250_platform_driver = {
.driver = {
.name = "omap8250",
.pm = &omap8250_dev_pm_ops,
.pm = pm_ptr(&omap8250_dev_pm_ops),
.of_match_table = omap8250_dt_ids,
},
.probe = omap8250_probe,