forked from luck/tmp_suning_uos_patched
Input: libps2 - remove delayed command execution
Delayed command execution is not used by anyone so let's remove it. Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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@ -26,15 +26,6 @@ MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>");
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MODULE_DESCRIPTION("PS/2 driver library");
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MODULE_LICENSE("GPL");
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/* Work structure to schedule execution of a command */
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struct ps2work {
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struct work_struct work;
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struct ps2dev *ps2dev;
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int command;
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unsigned char param[0];
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};
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/*
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* ps2_sendbyte() sends a byte to the device and waits for acknowledge.
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* It doesn't handle retransmission, though it could - because if there
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@ -245,49 +236,6 @@ int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command)
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}
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EXPORT_SYMBOL(ps2_command);
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/*
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* ps2_execute_scheduled_command() sends a command, previously scheduled by
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* ps2_schedule_command(), to a PS/2 device (keyboard, mouse, etc.)
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*/
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static void ps2_execute_scheduled_command(struct work_struct *work)
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{
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struct ps2work *ps2work = container_of(work, struct ps2work, work);
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ps2_command(ps2work->ps2dev, ps2work->param, ps2work->command);
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kfree(ps2work);
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}
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/*
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* ps2_schedule_command() allows to schedule delayed execution of a PS/2
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* command and can be used to issue a command from an interrupt or softirq
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* context.
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*/
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int ps2_schedule_command(struct ps2dev *ps2dev, unsigned char *param, int command)
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{
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struct ps2work *ps2work;
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int send = (command >> 12) & 0xf;
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int receive = (command >> 8) & 0xf;
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if (!(ps2work = kmalloc(sizeof(struct ps2work) + max(send, receive), GFP_ATOMIC)))
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return -1;
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memset(ps2work, 0, sizeof(struct ps2work));
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ps2work->ps2dev = ps2dev;
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ps2work->command = command;
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memcpy(ps2work->param, param, send);
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INIT_WORK(&ps2work->work, ps2_execute_scheduled_command);
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if (!schedule_work(&ps2work->work)) {
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kfree(ps2work);
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return -1;
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}
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return 0;
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}
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EXPORT_SYMBOL(ps2_schedule_command);
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/*
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* ps2_init() initializes ps2dev structure
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*/
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@ -43,7 +43,6 @@ void ps2_init(struct ps2dev *ps2dev, struct serio *serio);
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int ps2_sendbyte(struct ps2dev *ps2dev, unsigned char byte, int timeout);
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void ps2_drain(struct ps2dev *ps2dev, int maxbytes, int timeout);
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int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command);
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int ps2_schedule_command(struct ps2dev *ps2dev, unsigned char *param, int command);
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int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data);
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int ps2_handle_response(struct ps2dev *ps2dev, unsigned char data);
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void ps2_cmd_aborted(struct ps2dev *ps2dev);
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