Merge branch 'master'

[linux-block.git] / drivers / scsi / dc395x.c

diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 600ba120286468e63f0df8240e08613dee24fdf5..c44af5795b10a547f0c7e915a7aed4de90e7cc0b 100644 (file)
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -976,6 +976,16 @@ static void send_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb)
        }
 }
 
+static inline void pio_trigger(void)
+{
+       static int feedback_requested;
+
+       if (!feedback_requested) {
+               feedback_requested = 1;
+               printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> "
+                      "to help improve support for your system.\n", __FILE__);
+       }
+}
 
 /* Prepare SRB for being sent to Device DCB w/ command *cmd */
 static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb,
@@ -2320,6 +2330,7 @@ static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
                                              CFG2_WIDEFIFO);
                        while (DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) != 0x40) {
                                u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+                               pio_trigger();
                                *(srb->virt_addr)++ = byte;
                                if (debug_enabled(DBG_PIO))
                                        printk(" %02x", byte);
@@ -2331,6 +2342,7 @@ static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb,
                 /* Read the last byte ... */
                                if (srb->total_xfer_length > 0) {
                                        u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO);
+                                       pio_trigger();
                                        *(srb->virt_addr)++ = byte;
                                        srb->total_xfer_length--;
                                        if (debug_enabled(DBG_PIO))
@@ -2507,6 +2519,7 @@ static void data_io_transfer(struct AdapterCtlBlk *acb,
                                if (debug_enabled(DBG_PIO))
                                        printk(" %02x", (unsigned char) *(srb->virt_addr));
 
+                               pio_trigger();
                                DC395x_write8(acb, TRM_S1040_SCSI_FIFO, 
                                     *(srb->virt_addr)++);