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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-07-26 12:49:39 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-07-27 14:19:58 +0300
commit17a82716587e9d7c3b246a789add490b2b5dcab6 (patch)
treef588440c5d114bbf6a5d4ddc9bc38b15086f3cf5 /drivers/usb/misc/iowarrior.c
parente98ba8cc3f8a897e4dcbf02cac5c2cf2470cd8e5 (diff)
downloadlinux-17a82716587e9d7c3b246a789add490b2b5dcab6.tar.xz
USB: iowarrior: fix up report size handling for some devices
In previous patches that added support for new iowarrior devices, the handling of the report size was not done correct. Fix that up and update the copyright date for the driver Reworked from an original patch written by Christoph Jung. Fixes: bab5417f5f01 ("USB: misc: iowarrior: add support for the 100 device") Fixes: 5f6f8da2d7b5 ("USB: misc: iowarrior: add support for the 28 and 28L devices") Fixes: 461d8deb26a7 ("USB: misc: iowarrior: add support for 2 OEMed devices") Cc: stable <stable@kernel.org> Reported-by: Christoph Jung <jung@codemercs.com> Link: https://lore.kernel.org/r/20200726094939.1268978-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/misc/iowarrior.c')
-rw-r--r--drivers/usb/misc/iowarrior.c35
1 files changed, 25 insertions, 10 deletions
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 4afd1ace3d32..70ec29681526 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -2,8 +2,9 @@
/*
* Native support for the I/O-Warrior USB devices
*
- * Copyright (c) 2003-2005 Code Mercenaries GmbH
- * written by Christian Lucht <lucht@codemercs.com>
+ * Copyright (c) 2003-2005, 2020 Code Mercenaries GmbH
+ * written by Christian Lucht <lucht@codemercs.com> and
+ * Christoph Jung <jung@codemercs.com>
*
* based on
@@ -802,14 +803,28 @@ static int iowarrior_probe(struct usb_interface *interface,
/* we have to check the report_size often, so remember it in the endianness suitable for our machine */
dev->report_size = usb_endpoint_maxp(dev->int_in_endpoint);
- if ((dev->interface->cur_altsetting->desc.bInterfaceNumber == 0) &&
- ((dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) ||
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56AM) ||
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28) ||
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW28L) ||
- (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW100)))
- /* IOWarrior56 has wMaxPacketSize different from report size */
- dev->report_size = 7;
+
+ /*
+ * Some devices need the report size to be different than the
+ * endpoint size.
+ */
+ if (dev->interface->cur_altsetting->desc.bInterfaceNumber == 0) {
+ switch (dev->product_id) {
+ case USB_DEVICE_ID_CODEMERCS_IOW56:
+ case USB_DEVICE_ID_CODEMERCS_IOW56AM:
+ dev->report_size = 7;
+ break;
+
+ case USB_DEVICE_ID_CODEMERCS_IOW28:
+ case USB_DEVICE_ID_CODEMERCS_IOW28L:
+ dev->report_size = 4;
+ break;
+
+ case USB_DEVICE_ID_CODEMERCS_IOW100:
+ dev->report_size = 13;
+ break;
+ }
+ }
/* create the urb and buffer for reading */
dev->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);