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Re: [Qemu-devel] [PATCH v2 3/4] adb.c: NO_KEY
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH v2 3/4] adb.c: NO_KEY |
Date: |
Thu, 5 May 2016 16:23:23 +0100 |
On 24 March 2016 at 14:06, Programmingkid <address@hidden> wrote:
> Sets keys that are not supported by ADB to an unusable value of 0xff.
>
> Signed-off-by: John Arbuckle <address@hidden>
> ---
> hw/input/adb.c | 32 +++++++++++++++++++-------------
> 1 file changed, 19 insertions(+), 13 deletions(-)
>
> diff --git a/hw/input/adb.c b/hw/input/adb.c
> index 3bfa686..8413db9 100644
> --- a/hw/input/adb.c
> +++ b/hw/input/adb.c
> @@ -62,6 +62,9 @@ do { printf("ADB: " fmt , ## __VA_ARGS__); } while (0)
> /* error codes */
> #define ADB_RET_NOTPRESENT (-2)
>
> +/* The adb keyboard doesn't have every key imaginable */
> +#define NO_KEY 0xff
> +
> static void adb_device_reset(ADBDevice *d)
> {
> qdev_reset_all(DEVICE(d));
> @@ -192,6 +195,9 @@ typedef struct ADBKeyboardClass {
>
> int qcode_to_adb_keycode[] = {
>
> + /* Make sure future additions are automatically set to NO_KEY */
> + [0 ... 0xff] = NO_KEY,
> +
> [Q_KEY_CODE_SHIFT] = ADB_KEY_LEFT_SHIFT,
> [Q_KEY_CODE_SHIFT_R] = ADB_KEY_RIGHT_SHIFT,
> [Q_KEY_CODE_ALT] = ADB_KEY_LEFT_OPTION,
> @@ -309,19 +315,19 @@ int qcode_to_adb_keycode[] = {
> [Q_KEY_CODE_PGUP] = ADB_KEY_PAGE_UP,
> [Q_KEY_CODE_PGDN] = ADB_KEY_PAGE_DOWN,
>
> - [Q_KEY_CODE_LESS] = 0,
> - [Q_KEY_CODE_STOP] = 0,
> - [Q_KEY_CODE_AGAIN] = 0,
> - [Q_KEY_CODE_PROPS] = 0,
> - [Q_KEY_CODE_UNDO] = 0,
> - [Q_KEY_CODE_FRONT] = 0,
> - [Q_KEY_CODE_COPY] = 0,
> - [Q_KEY_CODE_OPEN] = 0,
> - [Q_KEY_CODE_PASTE] = 0,
> - [Q_KEY_CODE_FIND] = 0,
> - [Q_KEY_CODE_CUT] = 0,
> - [Q_KEY_CODE_LF] = 0,
> - [Q_KEY_CODE_COMPOSE] = 0,
> + [Q_KEY_CODE_LESS] = NO_KEY,
> + [Q_KEY_CODE_STOP] = NO_KEY,
> + [Q_KEY_CODE_AGAIN] = NO_KEY,
> + [Q_KEY_CODE_PROPS] = NO_KEY,
> + [Q_KEY_CODE_UNDO] = NO_KEY,
> + [Q_KEY_CODE_FRONT] = NO_KEY,
> + [Q_KEY_CODE_COPY] = NO_KEY,
> + [Q_KEY_CODE_OPEN] = NO_KEY,
> + [Q_KEY_CODE_PASTE] = NO_KEY,
> + [Q_KEY_CODE_FIND] = NO_KEY,
> + [Q_KEY_CODE_CUT] = NO_KEY,
> + [Q_KEY_CODE_LF] = NO_KEY,
> + [Q_KEY_CODE_COMPOSE] = NO_KEY,
Since NO_KEY is the default value, there's no need to explicitly
list these keys as generating it.
You need to add a check to adb_keyboard_event() to make it
return early if the array entry is NO_KEY, because otherwise
we'll end up sending the 0xff to the guest.
thanks
-- PMM
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