diff options
| -rw-r--r-- | common/usb_kbd.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/common/usb_kbd.c b/common/usb_kbd.c index afad260d3d..352d86fb2e 100644 --- a/common/usb_kbd.c +++ b/common/usb_kbd.c @@ -17,6 +17,9 @@ #include <stdio_dev.h> #include <watchdog.h> #include <asm/byteorder.h> +#ifdef CONFIG_SANDBOX +#include <asm/state.h> +#endif #include <usb.h> @@ -118,7 +121,7 @@ struct usb_kbd_pdata { extern int __maybe_unused net_busy_flag; /* The period of time between two calls of usb_kbd_testc(). */ -static unsigned long __maybe_unused kbd_testc_tms; +static unsigned long kbd_testc_tms; /* Puts character in the queue and sets up the in and out pointer. */ static void usb_kbd_put_queue(struct usb_kbd_pdata *data, u8 c) @@ -394,21 +397,39 @@ static int usb_kbd_testc(struct stdio_dev *sdev) struct usb_device *usb_kbd_dev; struct usb_kbd_pdata *data; + /* + * Polling the keyboard for an event can take dozens of milliseconds. + * Add a delay between polls to avoid blocking activity which polls + * rapidly, like the UEFI console timer. + */ + unsigned long poll_delay = CONFIG_SYS_HZ / 50; + #ifdef CONFIG_CMD_NET /* * If net_busy_flag is 1, NET transfer is running, * then we check key-pressed every second (first check may be * less than 1 second) to improve TFTP booting performance. */ - if (net_busy_flag && (get_timer(kbd_testc_tms) < CONFIG_SYS_HZ)) - return 0; - kbd_testc_tms = get_timer(0); + if (net_busy_flag) + poll_delay = CONFIG_SYS_HZ; +#endif + +#ifdef CONFIG_SANDBOX + /* + * Skip delaying polls if a test requests it. + */ + if (state_get_skip_delays()) + poll_delay = 0; #endif + dev = stdio_get_by_name(sdev->name); usb_kbd_dev = (struct usb_device *)dev->priv; data = usb_kbd_dev->privptr; - usb_kbd_poll_for_event(usb_kbd_dev); + if (get_timer(kbd_testc_tms) >= poll_delay) { + usb_kbd_poll_for_event(usb_kbd_dev); + kbd_testc_tms = get_timer(0); + } return !(data->usb_in_pointer == data->usb_out_pointer); } |