diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index d654a6cc4162..60200f61592e 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -132,7 +132,7 @@
 static unsigned int disconnect_mask = ~0;
 module_param(disconnect_mask, int, 0444);
 
-static int do_abort(struct Scsi_Host *);
+static int do_abort(struct Scsi_Host *, unsigned int);
 static void do_reset(struct Scsi_Host *);
 static void bus_reset_cleanup(struct Scsi_Host *);
 
@@ -197,7 +197,7 @@ static inline void set_resid_from_SCp(struct scsi_cmnd *cmd)
  * @reg2: Second 5380 register to poll
  * @bit2: Second bitmask to check
  * @val2: Second expected value
- * @wait: Time-out in jiffies
+ * @wait: Time-out in jiffies, 0 if sleeping is not allowed
  *
  * Polls the chip in a reasonably efficient manner waiting for an
  * event to occur. After a short quick poll we begin to yield the CPU
@@ -213,7 +213,7 @@ static int NCR5380_poll_politely2(struct NCR5380_hostdata *hostdata,
                                   unsigned long wait)
 {
 	unsigned long n = hostdata->poll_loops;
-	unsigned long deadline = jiffies + wait;
+	unsigned long deadline;
 
 	do {
 		if ((NCR5380_read(reg1) & bit1) == val1)
@@ -223,10 +223,11 @@ static int NCR5380_poll_politely2(struct NCR5380_hostdata *hostdata,
 		cpu_relax();
 	} while (n--);
 
-	if (irqs_disabled() || in_interrupt())
+	if (!wait)
 		return -ETIMEDOUT;
 
 	/* Repeatedly sleep for 1 ms until deadline */
+	deadline = jiffies + wait;
 	while (time_is_after_jiffies(deadline)) {
 		schedule_timeout_uninterruptible(1);
 		if ((NCR5380_read(reg1) & bit1) == val1)
@@ -486,7 +487,7 @@ static int NCR5380_maybe_reset_bus(struct Scsi_Host *instance)
 			break;
 		case 2:
 			shost_printk(KERN_ERR, instance, "bus busy, attempting abort\n");
-			do_abort(instance);
+			do_abort(instance, 1);
 			break;
 		case 4:
 			shost_printk(KERN_ERR, instance, "bus busy, attempting reset\n");
@@ -818,7 +819,7 @@ static void NCR5380_dma_complete(struct Scsi_Host *instance)
 			if (toPIO > 0) {
 				dsprintk(NDEBUG_DMA, instance,
 				         "Doing %d byte PIO to 0x%p\n", cnt, *data);
-				NCR5380_transfer_pio(instance, &p, &cnt, data);
+				NCR5380_transfer_pio(instance, &p, &cnt, data, 0);
 				*count -= toPIO - cnt;
 			}
 		}
@@ -1185,7 +1186,7 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
 		goto out;
 	}
 	if (!hostdata->selecting) {
-		do_abort(instance);
+		do_abort(instance, 0);
 		return false;
 	}
 
@@ -1196,7 +1197,7 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
 	len = 1;
 	data = tmp;
 	phase = PHASE_MSGOUT;
-	NCR5380_transfer_pio(instance, &phase, &len, &data);
+	NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
 	if (len) {
 		NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
 		cmd->result = DID_ERROR << 16;
@@ -1234,7 +1235,8 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
  *
  * Inputs : instance - instance of driver, *phase - pointer to
  * what phase is expected, *count - pointer to number of
- * bytes to transfer, **data - pointer to data pointer.
+ * bytes to transfer, **data - pointer to data pointer,
+ * can_sleep - 1 or 0 when sleeping is permitted or not, respectively.
  *
  * Returns : -1 when different phase is entered without transferring
  * maximum number of bytes, 0 if all bytes are transferred or exit
@@ -1253,7 +1255,7 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
 
 static int NCR5380_transfer_pio(struct Scsi_Host *instance,
 				unsigned char *phase, int *count,
-				unsigned char **data)
+				unsigned char **data, unsigned int can_sleep)
 {
 	struct NCR5380_hostdata *hostdata = shost_priv(instance);
 	unsigned char p = *phase, tmp;
@@ -1274,7 +1276,8 @@ static int NCR5380_transfer_pio(struct Scsi_Host *instance,
 		 * valid
 		 */
 
-		if (NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ, HZ) < 0)
+		if (NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ,
+					  HZ * can_sleep) < 0)
 			break;
 
 		dsprintk(NDEBUG_HANDSHAKE, instance, "REQ asserted\n");
@@ -1320,7 +1323,7 @@ static int NCR5380_transfer_pio(struct Scsi_Host *instance,
 		}
 
 		if (NCR5380_poll_politely(hostdata,
-		                          STATUS_REG, SR_REQ, 0, 5 * HZ) < 0)
+		                          STATUS_REG, SR_REQ, 0, 5 * HZ * can_sleep) < 0)
 			break;
 
 		dsprintk(NDEBUG_HANDSHAKE, instance, "REQ negated, handshake complete\n");
@@ -1395,11 +1398,12 @@ static void do_reset(struct Scsi_Host *instance)
  * do_abort - abort the currently established nexus by going to
  * MESSAGE OUT phase and sending an ABORT message.
  * @instance: relevant scsi host instance
+ * @can_sleep: 1 or 0 when sleeping is permitted or not, respectively
  *
  * Returns 0 on success, negative error code on failure.
  */
 
-static int do_abort(struct Scsi_Host *instance)
+static int do_abort(struct Scsi_Host *instance, unsigned int can_sleep)
 {
 	struct NCR5380_hostdata *hostdata = shost_priv(instance);
 	unsigned char *msgptr, phase, tmp;
@@ -1419,7 +1423,8 @@ static int do_abort(struct Scsi_Host *instance)
 	 * the target sees, so we just handshake.
 	 */
 
-	rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ, 10 * HZ);
+	rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ,
+				   10 * HZ * can_sleep);
 	if (rc < 0)
 		goto out;
 
@@ -1430,7 +1435,8 @@ static int do_abort(struct Scsi_Host *instance)
 	if (tmp != PHASE_MSGOUT) {
 		NCR5380_write(INITIATOR_COMMAND_REG,
 		              ICR_BASE | ICR_ASSERT_ATN | ICR_ASSERT_ACK);
-		rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, 0, 3 * HZ);
+		rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, 0,
+					   3 * HZ * can_sleep);
 		if (rc < 0)
 			goto out;
 		NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_ATN);
@@ -1440,7 +1446,7 @@ static int do_abort(struct Scsi_Host *instance)
 	msgptr = &tmp;
 	len = 1;
 	phase = PHASE_MSGOUT;
-	NCR5380_transfer_pio(instance, &phase, &len, &msgptr);
+	NCR5380_transfer_pio(instance, &phase, &len, &msgptr, can_sleep);
 	if (len)
 		rc = -ENXIO;
 
@@ -1619,12 +1625,12 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
 			 */
 
 			if (NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
-			                          BASR_DRQ, BASR_DRQ, HZ) < 0) {
+			                          BASR_DRQ, BASR_DRQ, 0) < 0) {
 				result = -1;
 				shost_printk(KERN_ERR, instance, "PDMA read: DRQ timeout\n");
 			}
 			if (NCR5380_poll_politely(hostdata, STATUS_REG,
-			                          SR_REQ, 0, HZ) < 0) {
+			                          SR_REQ, 0, 0) < 0) {
 				result = -1;
 				shost_printk(KERN_ERR, instance, "PDMA read: !REQ timeout\n");
 			}
@@ -1636,7 +1642,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
 			 */
 			if (NCR5380_poll_politely2(hostdata,
 			     BUS_AND_STATUS_REG, BASR_DRQ, BASR_DRQ,
-			     BUS_AND_STATUS_REG, BASR_PHASE_MATCH, 0, HZ) < 0) {
+			     BUS_AND_STATUS_REG, BASR_PHASE_MATCH, 0, 0) < 0) {
 				result = -1;
 				shost_printk(KERN_ERR, instance, "PDMA write: DRQ and phase timeout\n");
 			}
@@ -1733,7 +1739,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 #if (NDEBUG & NDEBUG_NO_DATAOUT)
 				shost_printk(KERN_DEBUG, instance, "NDEBUG_NO_DATAOUT set, attempted DATAOUT aborted\n");
 				sink = 1;
-				do_abort(instance);
+				do_abort(instance, 0);
 				cmd->result = DID_ERROR << 16;
 				complete_cmd(instance, cmd);
 				hostdata->connected = NULL;
@@ -1789,7 +1795,8 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 							   NCR5380_PIO_CHUNK_SIZE);
 					len = transfersize;
 					NCR5380_transfer_pio(instance, &phase, &len,
-					                     (unsigned char **)&cmd->SCp.ptr);
+					                     (unsigned char **)&cmd->SCp.ptr,
+							     0);
 					cmd->SCp.this_residual -= transfersize - len;
 				}
 #ifdef CONFIG_SUN3
@@ -1800,7 +1807,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 			case PHASE_MSGIN:
 				len = 1;
 				data = &tmp;
-				NCR5380_transfer_pio(instance, &phase, &len, &data);
+				NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
 				cmd->SCp.Message = tmp;
 
 				switch (tmp) {
@@ -1907,7 +1914,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 					len = 2;
 					data = extended_msg + 1;
 					phase = PHASE_MSGIN;
-					NCR5380_transfer_pio(instance, &phase, &len, &data);
+					NCR5380_transfer_pio(instance, &phase, &len, &data, 1);
 					dsprintk(NDEBUG_EXTENDED, instance, "length %d, code 0x%02x\n",
 					         (int)extended_msg[1],
 					         (int)extended_msg[2]);
@@ -1920,7 +1927,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 						data = extended_msg + 3;
 						phase = PHASE_MSGIN;
 
-						NCR5380_transfer_pio(instance, &phase, &len, &data);
+						NCR5380_transfer_pio(instance, &phase, &len, &data, 1);
 						dsprintk(NDEBUG_EXTENDED, instance, "message received, residual %d\n",
 						         len);
 
@@ -1967,7 +1974,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 				len = 1;
 				data = &msgout;
 				hostdata->last_message = msgout;
-				NCR5380_transfer_pio(instance, &phase, &len, &data);
+				NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
 				if (msgout == ABORT) {
 					hostdata->connected = NULL;
 					hostdata->busy[scmd_id(cmd)] &= ~(1 << cmd->device->lun);
@@ -1986,12 +1993,12 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
 				 * PSEUDO-DMA architecture we should probably
 				 * use the dma transfer function.
 				 */
-				NCR5380_transfer_pio(instance, &phase, &len, &data);
+				NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
 				break;
 			case PHASE_STATIN:
 				len = 1;
 				data = &tmp;
-				NCR5380_transfer_pio(instance, &phase, &len, &data);
+				NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
 				cmd->SCp.Status = tmp;
 				break;
 			default:
@@ -2050,7 +2057,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
 
 	NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_BSY);
 	if (NCR5380_poll_politely(hostdata,
-	                          STATUS_REG, SR_SEL, 0, 2 * HZ) < 0) {
+	                          STATUS_REG, SR_SEL, 0, 0) < 0) {
 		shost_printk(KERN_ERR, instance, "reselect: !SEL timeout\n");
 		NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
 		return;
@@ -2062,12 +2069,12 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
 	 */
 
 	if (NCR5380_poll_politely(hostdata,
-	                          STATUS_REG, SR_REQ, SR_REQ, 2 * HZ) < 0) {
+	                          STATUS_REG, SR_REQ, SR_REQ, 0) < 0) {
 		if ((NCR5380_read(STATUS_REG) & (SR_BSY | SR_SEL)) == 0)
 			/* BUS FREE phase */
 			return;
 		shost_printk(KERN_ERR, instance, "reselect: REQ timeout\n");
-		do_abort(instance);
+		do_abort(instance, 0);
 		return;
 	}
 
@@ -2083,10 +2090,10 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
 		unsigned char *data = msg;
 		unsigned char phase = PHASE_MSGIN;
 
-		NCR5380_transfer_pio(instance, &phase, &len, &data);
+		NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
 
 		if (len) {
-			do_abort(instance);
+			do_abort(instance, 0);
 			return;
 		}
 	}
@@ -2096,7 +2103,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
 		shost_printk(KERN_ERR, instance, "expecting IDENTIFY message, got ");
 		spi_print_msg(msg);
 		printk("\n");
-		do_abort(instance);
+		do_abort(instance, 0);
 		return;
 	}
 	lun = msg[0] & 0x07;
@@ -2136,7 +2143,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
 		 * Since we have an established nexus that we can't do anything
 		 * with, we must abort it.
 		 */
-		if (do_abort(instance) == 0)
+		if (do_abort(instance, 0) == 0)
 			hostdata->busy[target] &= ~(1 << lun);
 		return;
 	}
@@ -2283,7 +2290,7 @@ static int NCR5380_abort(struct scsi_cmnd *cmd)
 		dsprintk(NDEBUG_ABORT, instance, "abort: cmd %p is connected\n", cmd);
 		hostdata->connected = NULL;
 		hostdata->dma_len = 0;
-		if (do_abort(instance) < 0) {
+		if (do_abort(instance, 0) < 0) {
 			set_host_byte(cmd, DID_ERROR);
 			complete_cmd(instance, cmd);
 			result = FAILED;
diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h
index 5935fd6d1a05..8a3b41932288 100644
--- a/drivers/scsi/NCR5380.h
+++ b/drivers/scsi/NCR5380.h
@@ -277,7 +277,8 @@ static const char *NCR5380_info(struct Scsi_Host *instance);
 static void NCR5380_reselect(struct Scsi_Host *instance);
 static bool NCR5380_select(struct Scsi_Host *, struct scsi_cmnd *);
 static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data);
-static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data);
+static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data,
+				unsigned int can_sleep);
 static int NCR5380_poll_politely2(struct NCR5380_hostdata *,
                                   unsigned int, u8, u8,
                                   unsigned int, u8, u8, unsigned long);
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index 29e4cdcade72..2df2f38a9b12 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -529,14 +529,14 @@ static inline int generic_NCR5380_precv(struct NCR5380_hostdata *hostdata,
 		if (start == len - 128) {
 			/* Ignore End of DMA interrupt for the final buffer */
 			if (NCR5380_poll_politely(hostdata, hostdata->c400_ctl_status,
-			                          CSR_HOST_BUF_NOT_RDY, 0, HZ / 64) < 0)
+			                          CSR_HOST_BUF_NOT_RDY, 0, 0) < 0)
 				break;
 		} else {
 			if (NCR5380_poll_politely2(hostdata, hostdata->c400_ctl_status,
 			                           CSR_HOST_BUF_NOT_RDY, 0,
 			                           hostdata->c400_ctl_status,
 			                           CSR_GATED_53C80_IRQ,
-			                           CSR_GATED_53C80_IRQ, HZ / 64) < 0 ||
+			                           CSR_GATED_53C80_IRQ, 0) < 0 ||
 			    NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY)
 				break;
 		}
@@ -565,7 +565,7 @@ static inline int generic_NCR5380_precv(struct NCR5380_hostdata *hostdata,
 	if (residual == 0 && NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
 	                                           BASR_END_DMA_TRANSFER,
 	                                           BASR_END_DMA_TRANSFER,
-	                                           HZ / 64) < 0)
+						   0) < 0)
 		scmd_printk(KERN_ERR, hostdata->connected, "%s: End of DMA timeout\n",
 		            __func__);
 
@@ -597,7 +597,7 @@ static inline int generic_NCR5380_psend(struct NCR5380_hostdata *hostdata,
 		                           CSR_HOST_BUF_NOT_RDY, 0,
 		                           hostdata->c400_ctl_status,
 		                           CSR_GATED_53C80_IRQ,
-		                           CSR_GATED_53C80_IRQ, HZ / 64) < 0 ||
+		                           CSR_GATED_53C80_IRQ, 0) < 0 ||
 		    NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) {
 			/* Both 128 B buffers are in use */
 			if (start >= 128)
@@ -644,13 +644,13 @@ static inline int generic_NCR5380_psend(struct NCR5380_hostdata *hostdata,
 	if (residual == 0) {
 		if (NCR5380_poll_politely(hostdata, TARGET_COMMAND_REG,
 		                          TCR_LAST_BYTE_SENT, TCR_LAST_BYTE_SENT,
-		                          HZ / 64) < 0)
+					  0) < 0)
 			scmd_printk(KERN_ERR, hostdata->connected,
 			            "%s: Last Byte Sent timeout\n", __func__);
 
 		if (NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
 		                          BASR_END_DMA_TRANSFER, BASR_END_DMA_TRANSFER,
-		                          HZ / 64) < 0)
+					  0) < 0)
 			scmd_printk(KERN_ERR, hostdata->connected, "%s: End of DMA timeout\n",
 			            __func__);
 	}
diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c
index b5dde9d0d054..5c808fbc6ce2 100644
--- a/drivers/scsi/mac_scsi.c
+++ b/drivers/scsi/mac_scsi.c
@@ -285,7 +285,7 @@ static inline int macscsi_pread(struct NCR5380_hostdata *hostdata,
 
 	while (!NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
 	                              BASR_DRQ | BASR_PHASE_MATCH,
-	                              BASR_DRQ | BASR_PHASE_MATCH, HZ / 64)) {
+	                              BASR_DRQ | BASR_PHASE_MATCH, 0)) {
 		int bytes;
 
 		if (macintosh_config->ident == MAC_MODEL_IIFX)
@@ -304,7 +304,7 @@ static inline int macscsi_pread(struct NCR5380_hostdata *hostdata,
 
 		if (NCR5380_poll_politely2(hostdata, STATUS_REG, SR_REQ, SR_REQ,
 		                           BUS_AND_STATUS_REG, BASR_ACK,
-		                           BASR_ACK, HZ / 64) < 0)
+		                           BASR_ACK, 0) < 0)
 			scmd_printk(KERN_DEBUG, hostdata->connected,
 			            "%s: !REQ and !ACK\n", __func__);
 		if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH))
@@ -344,7 +344,7 @@ static inline int macscsi_pwrite(struct NCR5380_hostdata *hostdata,
 
 	while (!NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
 	                              BASR_DRQ | BASR_PHASE_MATCH,
-	                              BASR_DRQ | BASR_PHASE_MATCH, HZ / 64)) {
+	                              BASR_DRQ | BASR_PHASE_MATCH, 0)) {
 		int bytes;
 
 		if (macintosh_config->ident == MAC_MODEL_IIFX)
@@ -362,7 +362,7 @@ static inline int macscsi_pwrite(struct NCR5380_hostdata *hostdata,
 			if (NCR5380_poll_politely(hostdata, TARGET_COMMAND_REG,
 			                          TCR_LAST_BYTE_SENT,
 			                          TCR_LAST_BYTE_SENT,
-			                          HZ / 64) < 0) {
+			                          0) < 0) {
 				scmd_printk(KERN_ERR, hostdata->connected,
 				            "%s: Last Byte Sent timeout\n", __func__);
 				result = -1;
@@ -372,7 +372,7 @@ static inline int macscsi_pwrite(struct NCR5380_hostdata *hostdata,
 
 		if (NCR5380_poll_politely2(hostdata, STATUS_REG, SR_REQ, SR_REQ,
 		                           BUS_AND_STATUS_REG, BASR_ACK,
-		                           BASR_ACK, HZ / 64) < 0)
+		                           BASR_ACK, 0) < 0)
 			scmd_printk(KERN_DEBUG, hostdata->connected,
 			            "%s: !REQ and !ACK\n", __func__);
 		if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH))
