From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Mon, 27 Mar 2017 17:07:24 +0000 (+0200)
Subject: s390/pci: reduce iomap size (even more)
X-Git-Tag: v4.12-rc1~139^2~18
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=b0c8ce897a42ab357001f275fa80ba82c8d4555f;p=linux.git

s390/pci: reduce iomap size (even more)

Commit c506fff3d3a8 ("s390/pci: resize iomap") reduced the iomap
to NR_FUNCTIONS * PCI_BAR_COUNT elements. Since we only support
functions with 64bit BARs we can cut that number in half.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index e6cb96a1171f..ba56b9d9c765 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -69,7 +69,7 @@ static struct airq_struct zpci_airq = {
 };
 
 #define ZPCI_IOMAP_ENTRIES						\
-	min(((unsigned long) CONFIG_PCI_NR_FUNCTIONS * PCI_BAR_COUNT),	\
+	min(((unsigned long) ZPCI_NR_DEVICES * PCI_BAR_COUNT / 2),	\
 	    ZPCI_IOMAP_MAX_ENTRIES)
 
 static DEFINE_SPINLOCK(zpci_iomap_lock);