diff options
author | Jiri Slaby <jirislaby@gmail.com> | 2007-07-17 13:05:19 +0200 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-17 19:23:10 +0200 |
commit | 24c032f1dd393c995545ecefa8c1585ae9ef6b37 (patch) | |
tree | 5c7e4b21cf4d6935e090c4cc4b95a94ad6a82ec0 | |
parent | Char: isicom, proper variables types (diff) | |
download | linux-24c032f1dd393c995545ecefa8c1585ae9ef6b37.tar.xz linux-24c032f1dd393c995545ecefa8c1585ae9ef6b37.zip |
Char: moxa, eliminate busy waiting
blah, moxa delays 250+ ms in busy waiting, use msleep instead.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r-- | drivers/char/moxa.c | 37 |
1 files changed, 12 insertions, 25 deletions
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c index e0d35c20c04f..ed76f0a127fd 100644 --- a/drivers/char/moxa.c +++ b/drivers/char/moxa.c @@ -1405,7 +1405,6 @@ static int moxaCard; static struct mon_str moxaLog; static int moxaFuncTout = HZ / 2; -static void moxadelay(int); static void moxafunc(void __iomem *, int, ushort); static void wait_finish(void __iomem *); static void low_water_check(void __iomem *); @@ -2404,10 +2403,10 @@ void MoxaPortSendBreak(int port, int ms100) ofsAddr = moxa_ports[port].tableAddr; if (ms100) { moxafunc(ofsAddr, FC_SendBreak, Magic_code); - moxadelay(ms100 * (HZ / 10)); + msleep(ms100 * 10); } else { moxafunc(ofsAddr, FC_SendBreak, Magic_code); - moxadelay(HZ / 4); /* 250 ms */ + msleep(250); } moxafunc(ofsAddr, FC_StopBreak, Magic_code); } @@ -2476,18 +2475,6 @@ static int moxa_set_serial_info(struct moxa_port *info, /***************************************************************************** * Static local functions: * *****************************************************************************/ -/* - * moxadelay - delays a specified number ticks - */ -static void moxadelay(int tick) -{ - unsigned long st, et; - - st = jiffies; - et = st + tick; - while (time_before(jiffies, et)); -} - static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg) { @@ -2535,7 +2522,7 @@ static int moxaloadbios(int cardno, unsigned char __user *tmp, int len) return -EFAULT; baseAddr = moxa_boards[cardno].basemem; writeb(HW_reset, baseAddr + Control_reg); /* reset */ - moxadelay(1); /* delay 10 ms */ + msleep(10); for (i = 0; i < 4096; i++) writeb(0, baseAddr + i); /* clear fix page */ for (i = 0; i < len; i++) @@ -2713,7 +2700,7 @@ static int moxaloadc218(int cardno, void __iomem *baseAddr, int len) for (i = 0; i < 100; i++) { if (readw(baseAddr + C218_key) == keycode) break; - moxadelay(1); /* delay 10 ms */ + msleep(10); } if (readw(baseAddr + C218_key) != keycode) { return (-1); @@ -2725,7 +2712,7 @@ static int moxaloadc218(int cardno, void __iomem *baseAddr, int len) for (i = 0; i < 100; i++) { if (readw(baseAddr + C218_key) == keycode) break; - moxadelay(1); /* delay 10 ms */ + msleep(10); } retry++; } while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3)); @@ -2736,7 +2723,7 @@ static int moxaloadc218(int cardno, void __iomem *baseAddr, int len) for (i = 0; i < 100; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; - moxadelay(1); /* delay 10 ms */ + msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) { return (-1); @@ -2746,7 +2733,7 @@ static int moxaloadc218(int cardno, void __iomem *baseAddr, int len) for (i = 0; i < 100; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; - moxadelay(1); /* delay 10 ms */ + msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) { return (-1); @@ -2788,7 +2775,7 @@ static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPor for (i = 0; i < 10; i++) { if (readw(baseAddr + C320_key) == C320_KeyCode) break; - moxadelay(1); + msleep(10); } if (readw(baseAddr + C320_key) != C320_KeyCode) return (-1); @@ -2799,7 +2786,7 @@ static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPor for (i = 0; i < 10; i++) { if (readw(baseAddr + C320_key) == C320_KeyCode) break; - moxadelay(1); + msleep(10); } retry++; } while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3)); @@ -2809,7 +2796,7 @@ static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPor for (i = 0; i < 600; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; - moxadelay(1); + msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return (-100); @@ -2828,7 +2815,7 @@ static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPor for (i = 0; i < 500; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; - moxadelay(1); + msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return (-102); @@ -2842,7 +2829,7 @@ static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPor for (i = 0; i < 600; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; - moxadelay(1); + msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return (-102); |