usb: class: Use USB_CLASS_PRINTER instead of number 7
Kernel provides very nice defines for USB device class so it's a good idea to use them in suitable places. It is much easier to grep for such define instead of 7. Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Krzysztof Opasiak
Greg Kroah-Hartman
parent
79a02744bc
commit
298b992fdb
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@ -57,6 +57,7 @@
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#include <linux/mutex.h>
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#undef DEBUG
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#include <linux/usb.h>
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#include <linux/usb/ch9.h>
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#include <linux/ratelimit.h>
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/*
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@ -79,12 +80,20 @@
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#define IOCNR_SOFT_RESET 7
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/* Get device_id string: */
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#define LPIOC_GET_DEVICE_ID(len) _IOC(_IOC_READ, 'P', IOCNR_GET_DEVICE_ID, len)
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/* The following ioctls were added for http://hpoj.sourceforge.net: */
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/* Get two-int array:
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* [0]=current protocol (1=7/1/1, 2=7/1/2, 3=7/1/3),
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* [1]=supported protocol mask (mask&(1<<n)!=0 means 7/1/n supported): */
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/* The following ioctls were added for http://hpoj.sourceforge.net:
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* Get two-int array:
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* [0]=current protocol
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* (1=USB_CLASS_PRINTER/1/1, 2=USB_CLASS_PRINTER/1/2,
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* 3=USB_CLASS_PRINTER/1/3),
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* [1]=supported protocol mask (mask&(1<<n)!=0 means
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* USB_CLASS_PRINTER/1/n supported):
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*/
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#define LPIOC_GET_PROTOCOLS(len) _IOC(_IOC_READ, 'P', IOCNR_GET_PROTOCOLS, len)
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/* Set protocol (arg: 1=7/1/1, 2=7/1/2, 3=7/1/3): */
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/*
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* Set protocol
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* (arg: 1=USB_CLASS_PRINTER/1/1, 2=USB_CLASS_PRINTER/1/2,
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* 3=USB_CLASS_PRINTER/1/3):
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*/
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#define LPIOC_SET_PROTOCOL _IOC(_IOC_WRITE, 'P', IOCNR_SET_PROTOCOL, 0)
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/* Set channel number (HP Vendor-specific command): */
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#define LPIOC_HP_SET_CHANNEL _IOC(_IOC_WRITE, 'P', IOCNR_HP_SET_CHANNEL, 0)
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@ -146,8 +155,10 @@ struct usblp {
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int readcount; /* Counter for reads */
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int ifnum; /* Interface number */
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struct usb_interface *intf; /* The interface */
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/* Alternate-setting numbers and endpoints for each protocol
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* (7/1/{index=1,2,3}) that the device supports: */
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/*
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* Alternate-setting numbers and endpoints for each protocol
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* (USB_CLASS_PRINTER/1/{index=1,2,3}) that the device supports:
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*/
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struct {
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int alt_setting;
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struct usb_endpoint_descriptor *epwrite;
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@ -1206,19 +1217,23 @@ abort_ret:
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* but our requirements are too intricate for simple match to handle.
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*
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* The "proto_bias" option may be used to specify the preferred protocol
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* for all USB printers (1=7/1/1, 2=7/1/2, 3=7/1/3). If the device
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* supports the preferred protocol, then we bind to it.
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* for all USB printers (1=USB_CLASS_PRINTER/1/1, 2=USB_CLASS_PRINTER/1/2,
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* 3=USB_CLASS_PRINTER/1/3). If the device supports the preferred protocol,
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* then we bind to it.
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*
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* The best interface for us is 7/1/2, because it is compatible
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* with a stream of characters. If we find it, we bind to it.
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* The best interface for us is USB_CLASS_PRINTER/1/2, because it
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* is compatible with a stream of characters. If we find it, we bind to it.
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*
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* Note that the people from hpoj.sourceforge.net need to be able to
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* bind to 7/1/3 (MLC/1284.4), so we provide them ioctls for this purpose.
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* bind to USB_CLASS_PRINTER/1/3 (MLC/1284.4), so we provide them ioctls
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* for this purpose.
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*
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* Failing 7/1/2, we look for 7/1/3, even though it's probably not
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* stream-compatible, because this matches the behaviour of the old code.
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* Failing USB_CLASS_PRINTER/1/2, we look for USB_CLASS_PRINTER/1/3,
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* even though it's probably not stream-compatible, because this matches
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* the behaviour of the old code.
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*
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* If nothing else, we bind to 7/1/1 - the unidirectional interface.
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* If nothing else, we bind to USB_CLASS_PRINTER/1/1
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* - the unidirectional interface.
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*/
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static int usblp_select_alts(struct usblp *usblp)
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{
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@ -1236,7 +1251,8 @@ static int usblp_select_alts(struct usblp *usblp)
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for (i = 0; i < if_alt->num_altsetting; i++) {
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ifd = &if_alt->altsetting[i];
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if (ifd->desc.bInterfaceClass != 7 || ifd->desc.bInterfaceSubClass != 1)
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if (ifd->desc.bInterfaceClass != USB_CLASS_PRINTER ||
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ifd->desc.bInterfaceSubClass != 1)
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if (!(usblp->quirks & USBLP_QUIRK_BAD_CLASS))
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continue;
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@ -1262,8 +1278,10 @@ static int usblp_select_alts(struct usblp *usblp)
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if (!epwrite || (ifd->desc.bInterfaceProtocol > 1 && !epread))
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continue;
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/* Turn off reads for 7/1/1 (unidirectional) interfaces
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* and buggy bidirectional printers. */
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/*
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* Turn off reads for USB_CLASS_PRINTER/1/1 (unidirectional)
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* interfaces and buggy bidirectional printers.
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*/
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if (ifd->desc.bInterfaceProtocol == 1) {
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epread = NULL;
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} else if (usblp->quirks & USBLP_QUIRK_BIDIR) {
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@ -1406,12 +1424,12 @@ static int usblp_resume(struct usb_interface *intf)
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}
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static const struct usb_device_id usblp_ids[] = {
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{ USB_DEVICE_INFO(7, 1, 1) },
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{ USB_DEVICE_INFO(7, 1, 2) },
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{ USB_DEVICE_INFO(7, 1, 3) },
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{ USB_INTERFACE_INFO(7, 1, 1) },
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{ USB_INTERFACE_INFO(7, 1, 2) },
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{ USB_INTERFACE_INFO(7, 1, 3) },
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{ USB_DEVICE_INFO(USB_CLASS_PRINTER, 1, 1) },
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{ USB_DEVICE_INFO(USB_CLASS_PRINTER, 1, 2) },
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{ USB_DEVICE_INFO(USB_CLASS_PRINTER, 1, 3) },
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{ USB_INTERFACE_INFO(USB_CLASS_PRINTER, 1, 1) },
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{ USB_INTERFACE_INFO(USB_CLASS_PRINTER, 1, 2) },
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{ USB_INTERFACE_INFO(USB_CLASS_PRINTER, 1, 3) },
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{ USB_DEVICE(0x04b8, 0x0202) }, /* Seiko Epson Receipt Printer M129C */
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{ } /* Terminating entry */
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};
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