Merge "usb: f_gsi: Simplify handling of remote_wakeup timer" (3e982c0a) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/usb/gadget/function/f_gsi.c

+22 −36

Original line number	Diff line number	Diff line
		/* Copyright (c) 2015-2017, Linux Foundation. All rights reserved.
		/* Copyright (c) 2015-2018, Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -372,26 +372,22 @@ static const struct file_operations fops_usb_gsi = {
		.llseek = default_llseek,
		};

		static void debugfs_rw_timer_func(unsigned long arg)
		static void gsi_rw_timer_func(unsigned long arg)
		{
		struct f_gsi *gsi;

		gsi = (struct f_gsi *)arg;
		struct f_gsi gsi = (struct f_gsi )arg;

		if (gsi && atomic_read(&gsi->connected)) {
		log_event_dbg("%s: calling gsi_wakeup_host\n", __func__);
		gsi_wakeup_host(gsi);
		} else {
		log_event_dbg("%s: gsi not connected..del timer\n", __func__);
		gsi->debugfs_rw_enable = 0;
		del_timer(&gsi->debugfs_rw_timer);
		if (!atomic_read(&gsi->connected)) {
		log_event_dbg("%s: gsi not connected.. bail-out\n", __func__);
		gsi->debugfs_rw_timer_enable = 0;
		return;
		}

		if (gsi->debugfs_rw_enable) {
		gsi_wakeup_host(gsi);

		if (gsi->debugfs_rw_timer_enable) {
		log_event_dbg("%s: re-arm the timer\n", __func__);
		mod_timer(&gsi->debugfs_rw_timer,
		jiffies + msecs_to_jiffies(gsi->debugfs_rw_interval));
		mod_timer(&gsi->gsi_rw_timer,
		jiffies + msecs_to_jiffies(gsi->gsi_rw_timer_interval));
		}
		}

		@@ -440,7 +436,7 @@ static ssize_t usb_gsi_rw_write(struct file *file,
		goto err;
		}

		if (gsi->debugfs_rw_enable == !!input) {
		if (gsi->debugfs_rw_timer_enable == !!input) {
		if (!!input)
		log_event_dbg("%s: RW already enabled\n", __func__);
		else
		@@ -448,21 +444,14 @@ static ssize_t usb_gsi_rw_write(struct file *file,
		goto err;
		}

		gsi->debugfs_rw_enable = !!input;
		if (gsi->debugfs_rw_enable) {
		init_timer(&gsi->debugfs_rw_timer);
		gsi->debugfs_rw_timer.data = (unsigned long) gsi;
		gsi->debugfs_rw_timer.function = debugfs_rw_timer_func;
		gsi->debugfs_rw_timer_enable = !!input;

		/* Use default remote wakeup timer interval if it is not set */
		if (!gsi->debugfs_rw_interval)
		gsi->debugfs_rw_interval = DEFAULT_RW_TIMER_INTERVAL;
		gsi->debugfs_rw_timer.expires = jiffies +
		msecs_to_jiffies(gsi->debugfs_rw_interval);
		add_timer(&gsi->debugfs_rw_timer);
		if (gsi->debugfs_rw_timer_enable) {
		mod_timer(&gsi->gsi_rw_timer, jiffies +
		msecs_to_jiffies(gsi->gsi_rw_timer_interval));
		log_event_dbg("%s: timer initialized\n", __func__);
		} else {
		del_timer_sync(&gsi->debugfs_rw_timer);
		del_timer_sync(&gsi->gsi_rw_timer);
		log_event_dbg("%s: timer deleted\n", __func__);
		}

		@@ -481,7 +470,7 @@ static int usb_gsi_rw_show(struct seq_file s, void unused)
		return 0;
		}

		seq_printf(s, "%d\n", gsi->debugfs_rw_enable);
		seq_printf(s, "%d\n", gsi->debugfs_rw_timer_enable);

		return 0;
		}
		@@ -529,7 +518,7 @@ static ssize_t usb_gsi_rw_timer_write(struct file *file,
		goto err;
		}

		gsi->debugfs_rw_interval = timer_val;
		gsi->gsi_rw_timer_interval = timer_val;
		err:
		return count;
		}
		@@ -537,7 +526,6 @@ err:
		static int usb_gsi_rw_timer_show(struct seq_file s, void unused)
		{
		struct f_gsi *gsi;
		unsigned timer_interval;

		gsi = get_connected_gsi();
		if (!gsi) {
		@@ -545,11 +533,7 @@ static int usb_gsi_rw_timer_show(struct seq_file s, void unused)
		return 0;
		}

		timer_interval = DEFAULT_RW_TIMER_INTERVAL;
		if (gsi->debugfs_rw_interval)
		timer_interval = gsi->debugfs_rw_interval;

		seq_printf(s, "%ums\n", timer_interval);
		seq_printf(s, "%ums\n", gsi->gsi_rw_timer_interval);

		return 0;
		}
		@@ -3371,6 +3355,8 @@ static int gsi_function_init(enum ipa_usb_teth_prot prot_id)
		gsi_prot_ctx[prot_id] = gsi;

		gsi->d_port.ipa_usb_wq = ipa_usb_wq;
		gsi->gsi_rw_timer_interval = DEFAULT_RW_TIMER_INTERVAL;
		setup_timer(&gsi->gsi_rw_timer, gsi_rw_timer_func, (unsigned long) gsi);

		ret = gsi_function_ctrl_port_init(prot_id);
		if (ret) {

drivers/usb/gadget/function/f_gsi.h

+3 −3

Original line number	Diff line number	Diff line
		@@ -228,9 +228,9 @@ struct f_gsi {
		struct gsi_data_port d_port;
		struct gsi_ctrl_port c_port;
		/* To test remote wakeup using debugfs */
		struct timer_list debugfs_rw_timer;
		u8 debugfs_rw_enable;
		u16 debugfs_rw_interval;
		struct timer_list gsi_rw_timer;
		u8 debugfs_rw_timer_enable;
		u16 gsi_rw_timer_interval;
		};

		static struct f_gsi *gsi_prot_ctx[IPA_USB_MAX_TETH_PROT_SIZE];