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[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>
This commit is contained in:
Jan Glauber 2008-10-03 21:55:00 +02:00 committed by Martin Schwidefsky
parent d3d238c774
commit 75f6276187
1 changed files with 20 additions and 35 deletions
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55
drivers/s390/cio/qdio_setup.c
View File

@ -447,51 +447,36 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
{ {
char s[80]; 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) { switch (irq_ptr->qib.qfmt) {
case QDIO_QETH_QFMT: case QDIO_QETH_QFMT:
sprintf(s + strlen(s), "OSADE "); sprintf(s + strlen(s), "OSA ");
break; break;
case QDIO_ZFCP_QFMT: case QDIO_ZFCP_QFMT:
sprintf(s + strlen(s), "ZFCP "); sprintf(s + strlen(s), "ZFCP ");
break; break;
case QDIO_IQDIO_QFMT: case QDIO_IQDIO_QFMT:
sprintf(s + strlen(s), "HiperSockets "); sprintf(s + strlen(s), "HS ");
break; break;
} }
sprintf(s + strlen(s), "using: "); sprintf(s + strlen(s), "on SC %x using ", irq_ptr->schid.sch_no);
sprintf(s + strlen(s), "AI:%d ", is_thinint_irq(irq_ptr));
if (!is_thinint_irq(irq_ptr)) sprintf(s + strlen(s), "QEBSM:%d ", (irq_ptr->sch_token) ? 1 : 0);
sprintf(s + strlen(s), "no"); sprintf(s + strlen(s), "PCI:%d ",
sprintf(s + strlen(s), "AdapterInterrupts "); (irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED) ? 1 : 0);
if (!(irq_ptr->sch_token != 0)) sprintf(s + strlen(s), "TDD:%d ", css_general_characteristics.aif_tdd);
sprintf(s + strlen(s), "no"); sprintf(s + strlen(s), "SIGA:");
sprintf(s + strlen(s), "QEBSM "); sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.input) ? "R" : " ");
if (!(irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)) sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.output) ? "W" : " ");
sprintf(s + strlen(s), "no"); sprintf(s + strlen(s), "%s", (irq_ptr->siga_flag.sync) ? "S" : " ");
sprintf(s + strlen(s), "OutboundPCI "); sprintf(s + strlen(s), "%s",
if (!css_general_characteristics.aif_tdd) (!irq_ptr->siga_flag.no_sync_ti) ? "A" : " ");
sprintf(s + strlen(s), "no"); sprintf(s + strlen(s), "%s",
sprintf(s + strlen(s), "TDD\n"); (!irq_ptr->siga_flag.no_sync_out_ti) ? "O" : " ");
printk(KERN_INFO "qdio: %s", s); sprintf(s + strlen(s), "%s",
(!irq_ptr->siga_flag.no_sync_out_pci) ? "P" : " ");
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), "\n"); sprintf(s + strlen(s), "\n");
printk(KERN_INFO "qdio: %s", s); printk(KERN_INFO "%s", s);
} }
int __init qdio_setup_init(void) int __init qdio_setup_init(void)