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Just over a year ago (!) I had this brief exchange with Alan Stern: >> It seems that the signal that can be used with USBDEVFS_DISCSIGNAL and >> in usbdevfs_urb.signr is limited to the real-time signals SIGRTMIN to >> SIGRTMAX. What's the rationale for this restriction? I believe that a >> process can kill() itself with any signal number, can't it? I was >> planning to use SIGIO for usbdevfs_urb.signr and SIGTERM (uncaught) for >> USBDEVFS_DISCSIGNAL. I don't think I'll have a problem with using >> SIGRTMIN+n instead, but I'm curious to know if there's some subtle >> problem with the non-real-time signals that I should be aware of. > > I don't know of any reason for this restriction. Since no-one else could think of a reason either, I offer the following patch which allows any signal to be used with USBDEVFS_DISCSIGNAL and usbdevfs_urb.signr. Signed-off-by: Phil Endecott <usbpatch@chezphil.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
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| .. | ||
| buffer.c | ||
| config.c | ||
| devices.c | ||
| devio.c | ||
| driver.c | ||
| endpoint.c | ||
| file.c | ||
| generic.c | ||
| hcd-pci.c | ||
| hcd.c | ||
| hcd.h | ||
| hub.c | ||
| hub.h | ||
| inode.c | ||
| Kconfig | ||
| Makefile | ||
| message.c | ||
| notify.c | ||
| otg_whitelist.h | ||
| quirks.c | ||
| sysfs.c | ||
| urb.c | ||
| usb.c | ||
| usb.h | ||