diff options
author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
---|---|---|
committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/usb/gadget/function/f_printer.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/usb/gadget/function/f_printer.c')
-rw-r--r-- | kernel/drivers/usb/gadget/function/f_printer.c | 49 |
1 files changed, 25 insertions, 24 deletions
diff --git a/kernel/drivers/usb/gadget/function/f_printer.c b/kernel/drivers/usb/gadget/function/f_printer.c index 44173df27..0fbfb2b2a 100644 --- a/kernel/drivers/usb/gadget/function/f_printer.c +++ b/kernel/drivers/usb/gadget/function/f_printer.c @@ -804,6 +804,8 @@ done: static void printer_reset_interface(struct printer_dev *dev) { + unsigned long flags; + if (dev->interface < 0) return; @@ -815,9 +817,11 @@ static void printer_reset_interface(struct printer_dev *dev) if (dev->out_ep->desc) usb_ep_disable(dev->out_ep); + spin_lock_irqsave(&dev->lock, flags); dev->in_ep->desc = NULL; dev->out_ep->desc = NULL; dev->interface = -1; + spin_unlock_irqrestore(&dev->lock, flags); } /* Change our operational Interface. */ @@ -1035,12 +1039,10 @@ autoconf_fail: cdev->gadget->name); return -ENODEV; } - in_ep->driver_data = in_ep; /* claim */ out_ep = usb_ep_autoconfig(cdev->gadget, &fs_ep_out_desc); if (!out_ep) goto autoconf_fail; - out_ep->driver_data = out_ep; /* claim */ /* assumes that all endpoints are dual-speed */ hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress; @@ -1131,13 +1133,10 @@ static int printer_func_set_alt(struct usb_function *f, static void printer_func_disable(struct usb_function *f) { struct printer_dev *dev = func_to_printer(f); - unsigned long flags; DBG(dev, "%s\n", __func__); - spin_lock_irqsave(&dev->lock, flags); printer_reset_interface(dev); - spin_unlock_irqrestore(&dev->lock, flags); } static inline struct f_printer_opts @@ -1147,9 +1146,6 @@ static inline struct f_printer_opts func_inst.group); } -CONFIGFS_ATTR_STRUCT(f_printer_opts); -CONFIGFS_ATTR_OPS(f_printer_opts); - static void printer_attr_release(struct config_item *item) { struct f_printer_opts *opts = to_f_printer_opts(item); @@ -1159,13 +1155,12 @@ static void printer_attr_release(struct config_item *item) static struct configfs_item_operations printer_item_ops = { .release = printer_attr_release, - .show_attribute = f_printer_opts_attr_show, - .store_attribute = f_printer_opts_attr_store, }; -static ssize_t f_printer_opts_pnp_string_show(struct f_printer_opts *opts, +static ssize_t f_printer_opts_pnp_string_show(struct config_item *item, char *page) { + struct f_printer_opts *opts = to_f_printer_opts(item); int result; mutex_lock(&opts->lock); @@ -1175,9 +1170,10 @@ static ssize_t f_printer_opts_pnp_string_show(struct f_printer_opts *opts, return result; } -static ssize_t f_printer_opts_pnp_string_store(struct f_printer_opts *opts, +static ssize_t f_printer_opts_pnp_string_store(struct config_item *item, const char *page, size_t len) { + struct f_printer_opts *opts = to_f_printer_opts(item); int result, l; mutex_lock(&opts->lock); @@ -1190,14 +1186,12 @@ static ssize_t f_printer_opts_pnp_string_store(struct f_printer_opts *opts, return result; } -static struct f_printer_opts_attribute f_printer_opts_pnp_string = - __CONFIGFS_ATTR(pnp_string, S_IRUGO | S_IWUSR, - f_printer_opts_pnp_string_show, - f_printer_opts_pnp_string_store); +CONFIGFS_ATTR(f_printer_opts_, pnp_string); -static ssize_t f_printer_opts_q_len_show(struct f_printer_opts *opts, +static ssize_t f_printer_opts_q_len_show(struct config_item *item, char *page) { + struct f_printer_opts *opts = to_f_printer_opts(item); int result; mutex_lock(&opts->lock); @@ -1207,9 +1201,10 @@ static ssize_t f_printer_opts_q_len_show(struct f_printer_opts *opts, return result; } -static ssize_t f_printer_opts_q_len_store(struct f_printer_opts *opts, +static ssize_t f_printer_opts_q_len_store(struct config_item *item, const char *page, size_t len) { + struct f_printer_opts *opts = to_f_printer_opts(item); int ret; u16 num; @@ -1230,13 +1225,11 @@ end: return ret; } -static struct f_printer_opts_attribute f_printer_opts_q_len = - __CONFIGFS_ATTR(q_len, S_IRUGO | S_IWUSR, f_printer_opts_q_len_show, - f_printer_opts_q_len_store); +CONFIGFS_ATTR(f_printer_opts_, q_len); static struct configfs_attribute *printer_attrs[] = { - &f_printer_opts_pnp_string.attr, - &f_printer_opts_q_len.attr, + &f_printer_opts_attr_pnp_string, + &f_printer_opts_attr_q_len, NULL, }; @@ -1248,7 +1241,15 @@ static struct config_item_type printer_func_type = { static inline int gprinter_get_minor(void) { - return ida_simple_get(&printer_ida, 0, 0, GFP_KERNEL); + int ret; + + ret = ida_simple_get(&printer_ida, 0, 0, GFP_KERNEL); + if (ret >= PRINTER_MINORS) { + ida_simple_remove(&printer_ida, ret); + ret = -ENODEV; + } + + return ret; } static inline void gprinter_put_minor(int minor) |