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From: Jarod Wilson on 29 Jul 2010 11:50
Fix when CONFIG_MODULES is not enabled:

drivers/staging/lirc/lirc_parallel.c:243: error: implicit declaration of function 'module_refcount'
drivers/staging/lirc/lirc_it87.c:150: error: implicit declaration of function 'module_refcount'
drivers/built-in.o: In function `it87_probe':
lirc_it87.c:(.text+0x4079b0): undefined reference to `init_chrdev'
lirc_it87.c:(.text+0x4079cc): undefined reference to `drop_chrdev'
drivers/built-in.o: In function `lirc_it87_exit':
lirc_it87.c:(.exit.text+0x38a5): undefined reference to `drop_chrdev'

Its a quick hack and untested beyond building, since I don't have the
hardware, but it should do the trick.

Signed-off-by: Jarod Wilson <jarod(a)redhat.com>
---
drivers/staging/lirc/lirc_it87.c | 9 ++++++---
drivers/staging/lirc/lirc_parallel.c | 4 ++--
2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/lirc/lirc_it87.c b/drivers/staging/lirc/lirc_it87.c
index 781abc3..72f07f1 100644
--- a/drivers/staging/lirc/lirc_it87.c
+++ b/drivers/staging/lirc/lirc_it87.c
@@ -109,6 +109,7 @@ static DECLARE_WAIT_QUEUE_HEAD(lirc_read_queue);

static DEFINE_SPINLOCK(hardware_lock);
static DEFINE_SPINLOCK(dev_lock);
+static bool device_open;

static int rx_buf[RBUF_LEN];
unsigned int rx_tail, rx_head;
@@ -147,10 +148,11 @@ static void drop_port(void);
static int lirc_open(struct inode *inode, struct file *file)
{
spin_lock(&dev_lock);
- if (module_refcount(THIS_MODULE)) {
+ if (device_open) {
spin_unlock(&dev_lock);
return -EBUSY;
}
+ device_open = true;
spin_unlock(&dev_lock);
return 0;
}
@@ -158,6 +160,9 @@ static int lirc_open(struct inode *inode, struct file *file)

static int lirc_close(struct inode *inode, struct file *file)
{
+ spin_lock(&dev_lock);
+ device_open = false;
+ spin_unlock(&dev_lock);
return 0;
}

@@ -363,7 +368,6 @@ static struct lirc_driver driver = {
};


-#ifdef MODULE
static int init_chrdev(void)
{
driver.minor = lirc_register_driver(&driver);
@@ -380,7 +384,6 @@ static void drop_chrdev(void)
{
lirc_unregister_driver(driver.minor);
}
-#endif


/* SECTION: Hardware */
diff --git a/drivers/staging/lirc/lirc_parallel.c b/drivers/staging/lirc/lirc_parallel.c
index df12e7b..04ce97713 100644
--- a/drivers/staging/lirc/lirc_parallel.c
+++ b/drivers/staging/lirc/lirc_parallel.c
@@ -240,7 +240,7 @@ static void irq_handler(void *blah)
unsigned int level, newlevel;
unsigned int timeout;

- if (!module_refcount(THIS_MODULE))
+ if (!is_open)
return;

if (!is_claimed)
@@ -515,7 +515,7 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)

static int lirc_open(struct inode *node, struct file *filep)
{
- if (module_refcount(THIS_MODULE) || !lirc_claim())
+ if (is_open || !lirc_claim())
return -EBUSY;

parport_enable_irq(pport);


--
Jarod Wilson
jarod(a)redhat.com

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Prev: 2.6.34 BUG on stopping md device
Next: [PATCH] scsi: mac_scsi: check scsi_register() result