diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-23 09:26:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-23 09:26:32 -0700 |
| commit | 5cc0c03823ca18c490f8223f85ed40f2a9d936c4 (patch) | |
| tree | a05b7a2a1153efff01a78dc54e2102420e2c29bb /drivers/misc/dummy-irq.c | |
| parent | b64194068bbbdef3cc235f5459616a330f3b7724 (diff) | |
| parent | b5325a02aa84c794cf520d6d68cae4b150988a32 (diff) | |
Merge tag 'char-misc-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg Kroah-Hartman:
"Here are some small char/misc driver fixes for 3.10-rc2.
Nothing major here, just a number of fixes for things that people have
reported, and a MAINTAINERS update for the recent changes for the
hyperv files that went into 3.10-rc1."
* tag 'char-misc-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
ttyprintk: Fix NULL pointer deref by setting tty_port ops after initializing port
uio: UIO_DMEM_GENIRQ should depend on HAS_DMA
MAINTAINERS: update Hyper-V file list
mei: bus: Reset event_cb when disabling a device
Drivers: hv: Fix a bug in get_vp_index()
mei: fix out of array access to me clients array
Char: lp, protect LPGETSTATUS with port_mutex
dummy-irq: require the user to specify an IRQ number
Diffstat (limited to 'drivers/misc/dummy-irq.c')
| -rw-r--r-- | drivers/misc/dummy-irq.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/misc/dummy-irq.c b/drivers/misc/dummy-irq.c index 7014167e2c61..c37eeedfe215 100644 --- a/drivers/misc/dummy-irq.c +++ b/drivers/misc/dummy-irq.c @@ -19,7 +19,7 @@ #include <linux/irq.h> #include <linux/interrupt.h> -static int irq; +static int irq = -1; static irqreturn_t dummy_interrupt(int irq, void *dev_id) { @@ -36,6 +36,10 @@ static irqreturn_t dummy_interrupt(int irq, void *dev_id) static int __init dummy_irq_init(void) { + if (irq < 0) { + printk(KERN_ERR "dummy-irq: no IRQ given. Use irq=N\n"); + return -EIO; + } if (request_irq(irq, &dummy_interrupt, IRQF_SHARED, "dummy_irq", &irq)) { printk(KERN_ERR "dummy-irq: cannot register IRQ %d\n", irq); return -EIO; |