Messages in this thread | | | From | Mike <> | Subject | Re: [PATCH] Re: 2.6.3-bk9 QA testing: firewire good, USB printing dead | Date | Mon, 01 Mar 2004 22:01:18 -0500 |
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On Sun, 29 Feb 2004 23:43:48 -0800, Barry K. Nathan wrote:
> Does this patch (following my signature) fix the printer hangs? (It does > for me.) > > BTW, it's also an attachment on OSDL bugzilla #2221: > http://bugme.osdl.org/show_bug.cgi?id=2221 > > -Barry K. Nathan <barryn@pobox.com> > > diff -ruN linux-2.6.3-bk2/drivers/usb/class/usblp.c > linux-2.6.3-bk2-bkn1/drivers/usb/class/usblp.c --- > linux-2.6.3-bk2/drivers/usb/class/usblp.c 2004-02-29 23:18:26.000000000 > -0800 +++ linux-2.6.3-bk2-bkn1/drivers/usb/class/usblp.c 2004-02-29 > 23:17:24.000000000 -0800 @@ -603,7 +603,7 @@ > { > DECLARE_WAITQUEUE(wait, current); > struct usblp *usblp = file->private_data; > - int timeout, err = 0, transfer_length; + int timeout, err = 0, > transfer_length = 0; > size_t writecount = 0; > > while (writecount < count) { > @@ -654,6 +654,16 @@ > continue; > } > > + /* We must increment writecount here, and not at the + * end of the > loop. Otherwise, the final loop iteration may + * be skipped, leading > to incomplete printer output. + */ > + writecount += transfer_length; > + if (writecount == count) { > + up (&usblp->sem); > + break; > + } > + > transfer_length=(count - writecount); if (transfer_length > > USBLP_BUF_SIZE) > transfer_length = USBLP_BUF_SIZE; > @@ -677,8 +687,6 @@ > break; > } > up (&usblp->sem); > - > - writecount += transfer_length; > } > > return count; I also applied this patch to 2.6.4-rc1-mm1 and my printer problem seems to be solved. This is the first time in two weeks that printing has worked properly for me. Thx :)
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