Here is a patch to parport_pc.c that adds udev support. Without it sysfs
does not have enough information to give to udev so the lp and parport nodes
can be created. The only problem I have is the kernel_oops when I do the
following: insmod parport, insmod parport_pc, rmmod parport_pc, rmmod
parport, insmod parport, insmod parport_pc, rmmod parport_pc, kernel oops.
From the part of the traceback I can read the problem is in parport_pc_exit.
Any help in tracking down the problem would be appreciated. If this is
acceptable how can I get this added to the mainline? This is my first patch
so please be gentle.
Thanks,
Jason Dravet
Signed-off-by: Jason Dravet <[email protected]>
--- /usr/src/linux-2.6.14/drivers/parport/parport_pc.c.orig 2005-12-30
13:52:48.000000000 -0600
+++ /usr/src/linux-2.6.14/drivers/parport/parport_pc.c 2005-12-30
19:56:20.000000000 -0600
@@ -55,6 +55,7 @@
#include <linux/pci.h>
#include <linux/pnp.h>
#include <linux/sysctl.h>
+#include <linux/sysfs.h>
#include <asm/io.h>
#include <asm/dma.h>
@@ -99,6 +100,8 @@ static struct superio_struct { /* For Su
int dma;
} superios[NR_SUPERIOS] __devinitdata = { {0,},};
+static struct class *parallel_class;
+
static int user_specified;
#if defined(CONFIG_PARPORT_PC_SUPERIO) || \
(defined(CONFIG_PARPORT_1284) && defined(CONFIG_PARPORT_PC_FIFO))
@@ -2232,6 +2235,25 @@ struct parport *parport_pc_probe_port (u
is mandatory (see above) */
p->dma = PARPORT_DMA_NONE;
+ parallel_class = class_create(THIS_MODULE, "lp");
+ if (p->base == 888) /* 888 is dec for 378h */
+ {
+ class_device_create(parallel_class, NULL, MKDEV(6, 0), NULL, "lp0");
+ class_device_create(parallel_class, NULL, MKDEV(99, 0), NULL,
"parport0");
+ }
+
+ if (p->base == 632) /* 632 is dec for 278h */
+ {
+ class_device_create(parallel_class, NULL, MKDEV(6, 1), NULL, "lp1");
+ class_device_create(parallel_class, NULL, MKDEV(99, 1), NULL,
"parport1");
+ }
+
+ if (p->base == 956) /* 956 is dec for 3BCh */
+ {
+ class_device_create(parallel_class, NULL, MKDEV(6, 2), NULL, "lp2");
+ class_device_create(parallel_class, NULL, MKDEV(99, 2), NULL,
"parport2");
+ }
+
#ifdef CONFIG_PARPORT_PC_FIFO
if (parport_ECP_supported(p) &&
p->dma != PARPORT_DMA_NOFIFO &&
@@ -3406,6 +3428,13 @@ static void __exit parport_pc_exit(void)
if (pnp_registered_parport)
pnp_unregister_driver (&parport_pc_pnp_driver);
+ class_device_destroy(parallel_class, MKDEV(99, 2));
+ class_device_destroy(parallel_class, MKDEV(6, 2));
+ class_device_destroy(parallel_class, MKDEV(99, 1));
+ class_device_destroy(parallel_class, MKDEV(6, 1));
+ class_device_destroy(parallel_class, MKDEV(99, 0));
+ class_device_destroy(parallel_class, MKDEV(6, 0));
+
spin_lock(&ports_lock);
while (!list_empty(&ports_list)) {
struct parport_pc_private *priv;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
