[SCSI] dc395x: atomic_kmap for PIO
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 600ba12..c44af57 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -976,6 +976,16 @@
}
}
+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 @@
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 @@
/* 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 @@
if (debug_enabled(DBG_PIO))
printk(" %02x", (unsigned char) *(srb->virt_addr));
+ pio_trigger();
DC395x_write8(acb, TRM_S1040_SCSI_FIFO,
*(srb->virt_addr)++);