[ros-diffs] [reactos] 01/01: [PARPORT] Fix I/O port length check The Standard Parallel Port (SPP) has 3 registers, not 4: data, status, control This fixes the driver on the Compaq N600c laptop

[Victor Perevertkin]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=ba09834c5ebdaf8d3e2a5…

commit ba09834c5ebdaf8d3e2a518c7fb78eaa7d89bb50
Author:     Victor Perevertkin <victor.perevertkin(a)reactos.org>
AuthorDate: Wed Oct 21 15:24:10 2020 +0300
Commit:     Victor Perevertkin <victor.perevertkin(a)reactos.org>
CommitDate: Wed Oct 21 15:24:10 2020 +0300

    [PARPORT] Fix I/O port length check
    The Standard Parallel Port (SPP) has 3 registers, not 4: data, status, control
    This fixes the driver on the Compaq N600c laptop
---
 drivers/parallel/parport/fdo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/parallel/parport/fdo.c b/drivers/parallel/parport/fdo.c
index 82590607f48..deb9b63ba7e 100644
--- a/drivers/parallel/parport/fdo.c
+++ b/drivers/parallel/parport/fdo.c
@@ -161,7 +161,7 @@ FdoStartDevice(IN PDEVICE_OBJECT DeviceObject,
 
                 if (DeviceExtension->BaseAddress == 0)
                 {
-                    if (PartialDescriptor->u.Port.Length < 4)
+                    if (PartialDescriptor->u.Port.Length < 3)
                         return STATUS_INSUFFICIENT_RESOURCES;
 
                     DeviceExtension->BaseAddress =
PartialDescriptor->u.Port.Start.u.LowPart;