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xhci: dbc: remove tty specific port structure from struct xhci_dbc

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Use a void pointer that any function driver can use instead.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200723144530.9992-28-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman 2020-07-23 17:45:30 +03:00 committed by Greg Kroah-Hartman
parent 688915b11a
commit 9a360a7cae
2 changed files with 25 additions and 8 deletions
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2
drivers/usb/host/xhci-dbgcap.h
View File

@ -137,8 +137,8 @@ struct xhci_dbc {
unsigned resume_required:1;
struct dbc_ep eps[2];
struct dbc_port port;
const struct dbc_driver *driver;
void *priv;
};
struct dbc_request {

31
drivers/usb/host/xhci-dbgtty.c
View File

@ -19,6 +19,11 @@ static void dbc_tty_exit(void);
static struct tty_driver *dbc_tty_driver;
static inline struct dbc_port *dbc_to_port(struct xhci_dbc *dbc)
{
return dbc->priv;
}
static unsigned int
dbc_send_packet(struct dbc_port *port, char *packet, unsigned int size)
{
@ -99,7 +104,7 @@ static void
dbc_read_complete(struct xhci_dbc *dbc, struct dbc_request *req)
{
unsigned long flags;
struct dbc_port *port = &dbc->port;
struct dbc_port *port = dbc_to_port(dbc);
spin_lock_irqsave(&port->port_lock, flags);
list_add_tail(&req->list_pool, &port->read_queue);
@ -110,7 +115,7 @@ dbc_read_complete(struct xhci_dbc *dbc, struct dbc_request *req)
static void dbc_write_complete(struct xhci_dbc *dbc, struct dbc_request *req)
{
unsigned long flags;
struct dbc_port *port = &dbc->port;
struct dbc_port *port = dbc_to_port(dbc);
spin_lock_irqsave(&port->port_lock, flags);
list_add(&req->list_pool, &port->write_pool);
@ -397,7 +402,7 @@ int xhci_dbc_tty_register_device(struct xhci_dbc *dbc)
{
int ret;
struct device *tty_dev;
struct dbc_port *port = &dbc->port;
struct dbc_port *port = dbc_to_port(dbc);
if (port->registered)
return -EBUSY;
@ -446,7 +451,7 @@ register_fail:
void xhci_dbc_tty_unregister_device(struct xhci_dbc *dbc)
{
struct dbc_port *port = &dbc->port;
struct dbc_port *port = dbc_to_port(dbc);
if (!port->registered)
return;
@ -468,6 +473,7 @@ static const struct dbc_driver dbc_driver = {
int xhci_dbc_tty_probe(struct xhci_hcd *xhci)
{
struct xhci_dbc *dbc = xhci->dbc;
struct dbc_port *port;
int status;
/* dbc_tty_init will be called by module init() in the future */
@ -475,13 +481,20 @@ int xhci_dbc_tty_probe(struct xhci_hcd *xhci)
if (status)
return status;
dbc->driver = &dbc_driver;
port = kzalloc(sizeof(*port), GFP_KERNEL);
if (!port) {
status = -ENOMEM;
goto out;
}
dbc_tty_driver->driver_state = &dbc->port;
dbc->driver = &dbc_driver;
dbc->priv = port;
dbc_tty_driver->driver_state = port;
return 0;
out:
/* dbc_tty_exit will be called by module_exit() in the future */
dbc_tty_exit();
return status;
@ -493,7 +506,11 @@ out:
*/
void xhci_dbc_tty_remove(struct xhci_dbc *dbc)
{
struct dbc_port *port = dbc_to_port(dbc);
dbc->driver = NULL;
dbc->priv = NULL;
kfree(port);
/* dbc_tty_exit will be called by module_exit() in the future */
dbc_tty_exit();