All of lore.kernel.org
 help / color / mirror / Atom feed
* Fixed munging of usb_bcdDevice for 2.2 kernels
@ 2002-01-07 17:08 Fumitoshi UKAI
  0 siblings, 0 replies; only message in thread
From: Fumitoshi UKAI @ 2002-01-07 17:08 UTC (permalink / raw)
  To: linux-hotplug

From debian user Tom Huckstep, I've receive the following patches:

diff -ur hotplug-2001_09_19/etc/hotplug/usb.agent hotplug-bcd_fix/etc/hotplug/usb.agent
--- hotplug-2001_09_19/etc/hotplug/usb.agent	Thu Sep 20 01:20:02 2001
+++ hotplug-bcd_fix/etc/hotplug/usb.agent	Thu Dec  6 23:51:05 2001
@@ -39,6 +39,8 @@
 #
 # HISTORY:
 #
+# 04-Dec-2001	Fixed munging of usb_bcdDevice for 2.2 kernels (Tom
+#		Huckstep)
 # 14-Mar-2001	Cleanup, bitmask the match_flags
 # 26-Feb-2001	Cleanup, support comments (Gioele Barabucci)
 # 23-Jan-2001	Update 2.2 handling; unfortunately there's no "feature
@@ -120,8 +122,28 @@
     # work around 2.2 brokenness
     # munges the usb_bcdDevice such that it is a integer rather
     # than a float: e.g. 1.0 become 0100
-    PRODUCT=`echo $PRODUCT | sed -e "s+\.\([0-9]\)$+.\10+" -e "s/\.$/00/" \
-                                  -e "s+/\([0-9]\)\.\([0-9][0-9]\)+/0\1\2+"`
+
+    # In PRODUCT=x/y/z if z has only one digit after a decimal point then a
+    # trailing zero is added.  If z has only one digit before a decimal
+    # point then a leading zero is added.  The decimal point is then
+    # removed.
+
+    # e.g. a.b  -> 0ab0
+    #     ab.c  -> cab0
+    #      a.bc -> 0abc
+    #     ab.cd -> abcd
+
+    # Why does the kernel give us this in such a weird format?  I don't
+    # know, but looking at usb/usb.c in your 2.2 kernel source may help.
+    # N.B. to_bcd()
+
+    # Add the trailing zero
+    PRODUCT=`echo $PRODUCT | sed -e "s+\.\([0-9]\)$+.\10+"`
+    # Add the leading zero
+    PRODUCT=`echo $PRODUCT | sed -e "s/\/\([0-9].[0-9][0-9]\)$/\/0\1/"`
+    # Remove the decimal point
+    PRODUCT=`echo $PRODUCT | sed -e "s/\/\([0-9][0-9]\)\.\([0-9][0-9]\)/\/\1\2/"`
+
     set `echo $PRODUCT | $AWK -F/ '{print "0x" $1, "0x" $2, "0x" $3 }'` ''
     usb_idVendor=$1
     usb_idProduct=$2

Thanks,
Fumitoshi UKAI

_______________________________________________
Linux-hotplug-devel mailing list  http://linux-hotplug.sourceforge.net
Linux-hotplug-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel

^ permalink raw reply	[flat|nested] only message in thread

only message in thread, other threads:[~2002-01-07 17:08 UTC | newest]

Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2002-01-07 17:08 Fixed munging of usb_bcdDevice for 2.2 kernels Fumitoshi UKAI

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.