[PATCH] telephony/ixj: use msleep() instead of schedule_timeout()

Replace schedule_timeout() with msleep() to guarantee the task delays as
expected.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/telephony/ixj.c b/drivers/telephony/ixj.c
index f2c9fa4..9585d48 100644 (file)
--- a/drivers/telephony/ixj.c
+++ b/drivers/telephony/ixj.c
@@ -774,10 +774,7 @@ static int ixj_wink(IXJ *j)
        j->pots_winkstart = jiffies;
        SLIC_SetState(PLD_SLIC_STATE_OC, j);
 
-       while (time_before(jiffies, j->pots_winkstart + j->winktime)) {
-               set_current_state(TASK_INTERRUPTIBLE);
-               schedule_timeout(1);
-       }
+       msleep(jiffies_to_msecs(j->winktime));
 
        SLIC_SetState(slicnow, j);
        return 0;
@@ -1912,7 +1909,6 @@ static int ixj_pcmcia_cable_check(IXJ *j)
 
 static int ixj_hookstate(IXJ *j)
 {
-       unsigned long det;
        int fOffHook = 0;
 
        switch (j->cardtype) {
@@ -1943,11 +1939,7 @@ static int ixj_hookstate(IXJ *j)
                            j->pld_slicr.bits.state == PLD_SLIC_STATE_STANDBY) {
                                if (j->flags.ringing || j->flags.cringing) {
                                        if (!in_interrupt()) {
-                                               det = jiffies + (hertz / 50);
-                                               while (time_before(jiffies, det)) {
-                                                       set_current_state(TASK_INTERRUPTIBLE);
-                                                       schedule_timeout(1);
-                                               }
+                                               msleep(20);
                                        }
                                        SLIC_GetState(j);
                                        if (j->pld_slicr.bits.state == PLD_SLIC_STATE_RINGING) {
@@ -2062,7 +2054,7 @@ static void ixj_ring_start(IXJ *j)
 static int ixj_ring(IXJ *j)
 {
        char cntr;
-       unsigned long jif, det;
+       unsigned long jif;
 
        j->flags.ringing = 1;
        if (ixj_hookstate(j) & 1) {
@@ -2070,7 +2062,6 @@ static int ixj_ring(IXJ *j)
                j->flags.ringing = 0;
                return 1;
        }
-       det = 0;
        for (cntr = 0; cntr < j->maxrings; cntr++) {
                jif = jiffies + (1 * hertz);
                ixj_ring_on(j);
@@ -2089,13 +2080,7 @@ static int ixj_ring(IXJ *j)
                ixj_ring_off(j);
                while (time_before(jiffies, jif)) {
                        if (ixj_hookstate(j) & 1) {
-                               det = jiffies + (hertz / 100);
-                               while (time_before(jiffies, det)) {
-                                       set_current_state(TASK_INTERRUPTIBLE);
-                                       schedule_timeout(1);
-                                       if (signal_pending(current))
-                                               break;
-                               }
+                               msleep(10);
                                if (ixj_hookstate(j) & 1) {
                                        j->flags.ringing = 0;
                                        return 1;
@@ -6694,8 +6679,6 @@ static struct file_operations ixj_fops =
 
 static int ixj_linetest(IXJ *j)
 {
-       unsigned long jifwait;
-
        j->flags.pstncheck = 1; /* Testing */
        j->flags.pstn_present = 0; /* Assume the line is not there */
 
@@ -6726,11 +6709,7 @@ static int ixj_linetest(IXJ *j)
 
                outb_p(j->pld_scrw.byte, j->XILINXbase);
                daa_set_mode(j, SOP_PU_CONVERSATION);
-               jifwait = jiffies + hertz;
-               while (time_before(jiffies, jifwait)) {
-                       set_current_state(TASK_INTERRUPTIBLE);
-                       schedule_timeout(1);
-               }
+               msleep(1000);
                daa_int_read(j);
                daa_set_mode(j, SOP_PU_RESET);
                if (j->m_DAAShadowRegs.XOP_REGS.XOP.xr0.bitreg.VDD_OK) {
@@ -6750,11 +6729,7 @@ static int ixj_linetest(IXJ *j)
        j->pld_slicw.bits.rly3 = 0;
        outb_p(j->pld_slicw.byte, j->XILINXbase + 0x01);
        daa_set_mode(j, SOP_PU_CONVERSATION);
-       jifwait = jiffies + hertz;
-       while (time_before(jiffies, jifwait)) {
-               set_current_state(TASK_INTERRUPTIBLE);
-               schedule_timeout(1);
-       }
+       msleep(1000);
        daa_int_read(j);
        daa_set_mode(j, SOP_PU_RESET);
        if (j->m_DAAShadowRegs.XOP_REGS.XOP.xr0.bitreg.VDD_OK) {
@@ -6783,7 +6758,6 @@ static int ixj_linetest(IXJ *j)
 static int ixj_selfprobe(IXJ *j)
 {
        unsigned short cmd;
-       unsigned long jif;
        int cnt;
        BYTES bytes;
 
@@ -6933,29 +6907,13 @@ static int ixj_selfprobe(IXJ *j)
        } else {
                if (j->cardtype == QTI_LINEJACK) {
                        LED_SetState(0x1, j);
-                       jif = jiffies + (hertz / 10);
-                       while (time_before(jiffies, jif)) {
-                               set_current_state(TASK_INTERRUPTIBLE);
-                               schedule_timeout(1);
-                       }
+                       msleep(100);
                        LED_SetState(0x2, j);
-                       jif = jiffies + (hertz / 10);
-                       while (time_before(jiffies, jif)) {
-                               set_current_state(TASK_INTERRUPTIBLE);
-                               schedule_timeout(1);
-                       }
+                       msleep(100);
                        LED_SetState(0x4, j);
-                       jif = jiffies + (hertz / 10);
-                       while (time_before(jiffies, jif)) {
-                               set_current_state(TASK_INTERRUPTIBLE);
-                               schedule_timeout(1);
-                       }
+                       msleep(100);
                        LED_SetState(0x8, j);
-                       jif = jiffies + (hertz / 10);
-                       while (time_before(jiffies, jif)) {
-                               set_current_state(TASK_INTERRUPTIBLE);
-                               schedule_timeout(1);
-                       }
+                       msleep(100);
                        LED_SetState(0x0, j);
                        daa_get_version(j);
                        if (ixjdebug & 0x0002)