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Kirill Smelkov
linux
Commits
a938fd42
Commit
a938fd42
authored
May 29, 2003
by
Arnaldo Carvalho de Melo
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o drivers/usb/media/ibmcam: remove MOD_{INC,DEC}_USE_COUNT
parent
2df3f7db
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drivers/usb/media/ibmcam.c
drivers/usb/media/ibmcam.c
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drivers/usb/media/ibmcam.c
View file @
a938fd42
...
...
@@ -12,18 +12,6 @@
* 5/24/00 Removed optional (and unnecessary) locking of the driver while
* the device remains plugged in. Corrected race conditions in ibmcam_open
* and ibmcam_probe() routines using this as a guideline:
*
* (2) The big kernel lock is automatically released when a process sleeps
* in the kernel and is automatically reacquired on reschedule if the
* process had the lock originally. Any code that can be compiled as
* a module and is entered with the big kernel lock held *MUST*
* increment the use count to activate the indirect module protection
* before doing anything that might sleep.
*
* In practice, this means that all routines that live in modules and
* are invoked under the big kernel lock should do MOD_INC_USE_COUNT
* as their very first action. And all failure paths from that
* routine must do MOD_DEC_USE_COUNT before returning.
*/
#include <linux/kernel.h>
...
...
@@ -3865,8 +3853,6 @@ static int ibmcam_probe(struct usb_interface *intf, const struct usb_device_id *
return
-
ENODEV
;
}
/* Code below may sleep, need to lock module while we are here */
MOD_INC_USE_COUNT
;
uvd
=
usbvideo_AllocateDevice
(
cams
);
if
(
uvd
!=
NULL
)
{
/* Here uvd is a fully allocated uvd object */
...
...
@@ -3896,7 +3882,6 @@ static int ibmcam_probe(struct usb_interface *intf, const struct usb_device_id *
uvd
=
NULL
;
}
}
MOD_DEC_USE_COUNT
;
usb_set_intfdata
(
intf
,
uvd
);
return
0
;
}
...
...
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