xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
複製 0
程式碼 問題管理 合併請求 Actions Packages Projects 版本發佈 Wiki Activity

tty: rework break handling

瀏覽代碼 
Some hardware needs to do break handling itself and may have partial
support only. Make break_ctl return an error code. Add a tty driver flag
so you can indicate driver hardware side break support.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox
2008-07-22 11:18:03 +01:00
committed by Linus Torvalds
父節點 abbe629ae4
當前提交 9e98966c7b
共有 20 個文件被更改，包括 97 次插入 和 84 次删除
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/char/istallion.c
查看文件

@@ -609,7 +609,7 @@ static void stli_unthrottle(struct tty_struct *tty);
static void stli_stop(struct tty_struct *tty);
static void stli_start(struct tty_struct *tty);
static void stli_flushbuffer(struct tty_struct *tty);
static void stli_breakctl(struct tty_struct *tty, int state);
static int stli_breakctl(struct tty_struct *tty, int state);
static void stli_waituntilsent(struct tty_struct *tty, int timeout);
static void stli_sendxchar(struct tty_struct *tty, char ch);
static void stli_hangup(struct tty_struct *tty);
@@ -1909,7 +1909,7 @@ static void stli_flushbuffer(struct tty_struct *tty)
/*****************************************************************************/
static void stli_breakctl(struct tty_struct *tty, int state)
static int stli_breakctl(struct tty_struct *tty, int state)
{
struct stlibrd *brdp;
struct stliport *portp;
@@ -1917,15 +1917,16 @@ static void stli_breakctl(struct tty_struct *tty, int state)
portp = tty->driver_data;
if (portp == NULL)
return;
return -EINVAL;
if (portp->brdnr >= stli_nrbrds)
return;
return -EINVAL;
brdp = stli_brds[portp->brdnr];
if (brdp == NULL)
return;
return -EINVAL;
arg = (state == -1) ? BREAKON : BREAKOFF;
stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0);
return 0;
}
/*****************************************************************************/