[S390] qdio: prevent stack clobber

Don't print more information than fits into the string on the
stack. Combine the informational output of qdio to fit into
one line.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 1679e2f..a0b6b46 100644 (file)
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -447,51 +447,36 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
 {
        char s[80];
 
-       sprintf(s, "%s sc:%x ", cdev->dev.bus_id, irq_ptr->schid.sch_no);
-
+       sprintf(s, "qdio: %s ", dev_name(&cdev->dev));
        switch (irq_ptr->qib.qfmt) {
        case QDIO_QETH_QFMT:
-               sprintf(s + strlen(s), "OSADE ");
+               sprintf(s + strlen(s), "OSA ");
                break;
        case QDIO_ZFCP_QFMT:
                sprintf(s + strlen(s), "ZFCP ");
                break;
        case QDIO_IQDIO_QFMT:
-               sprintf(s + strlen(s), "HiperSockets ");
+               sprintf(s + strlen(s), "HS ");
                break;
        }
-       sprintf(s + strlen(s), "using: ");
-
-       if (!is_thinint_irq(irq_ptr))
-               sprintf(s + strlen(s), "no");
-       sprintf(s + strlen(s), "AdapterInterrupts ");
-       if (!(irq_ptr->sch_token != 0))
-               sprintf(s + strlen(s), "no");
-       sprintf(s + strlen(s), "QEBSM ");
-       if (!(irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED))
-               sprintf(s + strlen(s), "no");
-       sprintf(s + strlen(s), "OutboundPCI ");
-       if (!css_general_characteristics.aif_tdd)
-               sprintf(s + strlen(s), "no");
-       sprintf(s + strlen(s), "TDD\n");
-       printk(KERN_INFO "qdio: %s", s);
-
-       memset(s, 0, sizeof(s));
-       sprintf(s, "%s SIGA required: ", cdev->dev.bus_id);
-       if (irq_ptr->siga_flag.input)
-               sprintf(s + strlen(s), "Read ");
-       if (irq_ptr->siga_flag.output)
-               sprintf(s + strlen(s), "Write ");
-       if (irq_ptr->siga_flag.sync)
-               sprintf(s + strlen(s), "Sync ");
-       if (!irq_ptr->siga_flag.no_sync_ti)
-               sprintf(s + strlen(s), "SyncAI ");
-       if (!irq_ptr->siga_flag.no_sync_out_ti)
-               sprintf(s + strlen(s), "SyncOutAI ");
-       if (!irq_ptr->siga_flag.no_sync_out_pci)
-               sprintf(s + strlen(s), "SyncOutPCI");
+       sprintf(s + strlen(s), "on SC %x using ", irq_ptr->schid.sch_no);
+       sprintf(s + strlen(s), "AI:%d ", is_thinint_irq(irq_ptr));
+       sprintf(s + strlen(s), "QEBSM:%d ", (irq_ptr->sch_token) ? 1 : 0);
+       sprintf(s + strlen(s), "PCI:%d ",
+               (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0);
+       sprintf(s + strlen(s), "TDD:%d ", css_general_characteristics.aif_tdd);
+       sprintf(s + strlen(s), "SIGA:");
+       sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.input) ? "R" : " ");
+       sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.output) ? "W" : " ");
+       sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.sync) ? "S" : " ");
+       sprintf(s + strlen(s), "%s",
+               (!irq_ptr->siga_flag.no_sync_ti) ? "A" : " ");
+       sprintf(s + strlen(s), "%s",
+               (!irq_ptr->siga_flag.no_sync_out_ti) ? "O" : " ");
+       sprintf(s + strlen(s), "%s",
+               (!irq_ptr->siga_flag.no_sync_out_pci) ? "P" : " ");
        sprintf(s + strlen(s), "\n");
-       printk(KERN_INFO "qdio: %s", s);
+       printk(KERN_INFO "%s", s);
 }
 
 int __init qdio_setup_init(void)