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authorAdrian Bunk <bunk@stusta.de>2006-10-17 03:10:00 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-17 11:18:44 -0400
commita4bb2cf1c3d30e7498e5561b22246b5bcbfe2e15 (patch)
tree2f8a81498718d563b928c2e2c3d139ec799f4b02 /drivers/char/specialix.c
parentc60099bfe3a5e6fa22a930627689b3769c52153f (diff)
[PATCH] drivers/char/specialix.c: fix the baud conversion
Correct the following bugs introduced by commit 67cc0161ecc9ebee6eba4af6cbfdba028090b1b9: - remove one remaining and now incorrect baud_table[] usage - "baud +=" is no longer correct The former bug was spotted by the Coverity checker. Rolf Eike Beer spotted a bug in the initial version of my patch. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/specialix.c')
-rw-r--r--drivers/char/specialix.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index d0b88d0e87f..7e1bd9562c2 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -183,11 +183,6 @@ static int sx_poll = HZ;
183 183
184static struct tty_driver *specialix_driver; 184static struct tty_driver *specialix_driver;
185 185
186static unsigned long baud_table[] = {
187 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
188 9600, 19200, 38400, 57600, 115200, 0,
189};
190
191static struct specialix_board sx_board[SX_NBOARD] = { 186static struct specialix_board sx_board[SX_NBOARD] = {
192 { 0, SX_IOBASE1, 9, }, 187 { 0, SX_IOBASE1, 9, },
193 { 0, SX_IOBASE2, 11, }, 188 { 0, SX_IOBASE2, 11, },
@@ -1090,9 +1085,9 @@ static void sx_change_speed(struct specialix_board *bp, struct specialix_port *p
1090 1085
1091 if (baud == 38400) { 1086 if (baud == 38400) {
1092 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) 1087 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1093 baud ++; 1088 baud = 57600;
1094 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) 1089 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1095 baud += 2; 1090 baud = 115200;
1096 } 1091 }
1097 1092
1098 if (!baud) { 1093 if (!baud) {
@@ -1150,11 +1145,9 @@ static void sx_change_speed(struct specialix_board *bp, struct specialix_port *p
1150 sx_out(bp, CD186x_RBPRL, tmp & 0xff); 1145 sx_out(bp, CD186x_RBPRL, tmp & 0xff);
1151 sx_out(bp, CD186x_TBPRL, tmp & 0xff); 1146 sx_out(bp, CD186x_TBPRL, tmp & 0xff);
1152 spin_unlock_irqrestore(&bp->lock, flags); 1147 spin_unlock_irqrestore(&bp->lock, flags);
1153 if (port->custom_divisor) { 1148 if (port->custom_divisor)
1154 baud = (SX_OSCFREQ + port->custom_divisor/2) / port->custom_divisor; 1149 baud = (SX_OSCFREQ + port->custom_divisor/2) / port->custom_divisor;
1155 baud = ( baud + 5 ) / 10; 1150 baud = (baud + 5) / 10; /* Estimated CPS */
1156 } else
1157 baud = (baud_table[baud] + 5) / 10; /* Estimated CPS */
1158 1151
1159 /* Two timer ticks seems enough to wakeup something like SLIP driver */ 1152 /* Two timer ticks seems enough to wakeup something like SLIP driver */
1160 tmp = ((baud + HZ/2) / HZ) * 2 - CD186x_NFIFO; 1153 tmp = ((baud + HZ/2) / HZ) * 2 - CD186x_NFIFO;