From b5c16c6a031c52cc4b7dda6c3de46462fbc92eab Mon Sep 17 00:00:00 2001 From: =?utf8?q?Frank=20Sch=C3=A4fer?= Date: Tue, 6 Aug 2013 19:26:27 +0200 Subject: [PATCH] usb: pl2303: increase the allowed baud rate range for the divisor based encoding method MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Reinhard Max has done some tests with a PL2303HX (rev A) and a logic analyzer and it seems, that although the PL2303HX is specified for baud rates from 75 to 6M baud, the full divisor range can be used with the divisor based baud rate encoding method. This corresponds to baud rates from 46 to 24M baud. Baud rates down to 46 baud (max. divisor) have been confirmed to work even under heavy/permanent load, so remove the lower limit. Baud rates up to 24M baud should really be tested carefully in "real life" scenarios before removing the upper limit completely. Anyway, the Windows driver allows maximum baud rates of 110% of the specified limit, so for now, increase the upper limit to this value. Signed-off-by: Frank Schäfer Signed-off-by: Reinhard Max Signed-off-by: Greg Kroah-Hartman --- Reading git-format-patch failed