The patch titled
make 8250_pnp serial driver work after suspend to ram
has been added to the -mm tree. Its filename is
make-8250_pnp-serial-driver-work-after.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: make 8250_pnp serial driver work after suspend to ram
From: Mike Galbraith <efault@xxxxxx>
Add suspend/resume methods to drivers/serial/8250_pnp.c. Tested on a
P4/HT 16550A box, ttyS0 login survives across suspend to ram.
Signed-off-by: Mike Galbraith <efault@xxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Cc: Adam Belay <ambx1@xxxxxxxxxx>
Cc: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/serial/8250_pnp.c | 29 ++++++++++++++++++++++++++++-
1 files changed, 28 insertions(+), 1 deletion(-)
diff -puN drivers/serial/8250_pnp.c~make-8250_pnp-serial-driver-work-after drivers/serial/8250_pnp.c
--- a/drivers/serial/8250_pnp.c~make-8250_pnp-serial-driver-work-after
+++ a/drivers/serial/8250_pnp.c
@@ -464,11 +464,38 @@ static void __devexit serial_pnp_remove(
serial8250_unregister_port(line - 1);
}
+#ifdef CONFIG_PM
+static int serial_pnp_suspend(struct pnp_dev *dev, pm_message_t state)
+{
+ long line = (long)pnp_get_drvdata(dev);
+
+ if (!line)
+ return -ENODEV;
+ serial8250_suspend_port(line - 1);
+ return 0;
+}
+
+static int serial_pnp_resume(struct pnp_dev *dev)
+{
+ long line = (long)pnp_get_drvdata(dev);
+
+ if (!line)
+ return -ENODEV;
+ serial8250_resume_port(line - 1);
+ return 0;
+}
+
+#endif /* CONFIG_PM */
+
static struct pnp_driver serial_pnp_driver = {
.name = "serial",
- .id_table = pnp_dev_table,
.probe = serial_pnp_probe,
.remove = __devexit_p(serial_pnp_remove),
+#ifdef CONFIG_PM
+ .suspend = serial_pnp_suspend,
+ .resume = serial_pnp_resume,
+#endif
+ .id_table = pnp_dev_table,
};
static int __init serial8250_pnp_init(void)
_
Patches currently in -mm which might be from efault@xxxxxx are
remove-the-syslog-interface-when-printk-is-disabled.patch
make-8250_pnp-serial-driver-work-after.patch
make-8250_pnp-serial-driver-work-after-tidy.patch
sched-improve-migration-accuracy.patch
sched-improve-migration-accuracy-tidy.patch
sched-improve-migration-accuracy-fix.patch
readahead-call-scheme.patch
-
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