Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a7839e960675b549f06209d18283d5cee2ce9261
Commit: a7839e960675b549f06209d18283d5cee2ce9261
Parent: 2c80b01beae3db9f99a161ec216405dd694bc4c2
Author: Zhao Yakui <[EMAIL PROTECTED]>
AuthorDate: Wed Nov 28 16:21:21 2007 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Nov 29 09:24:52 2007 -0800
PNP: increase the maximum number of resources
On some systems the number of resources(IO,MEM) returnedy by PNP device is
greater than the PNP constant, for example motherboard devices. It brings
that some resources can't be reserved and resource confilicts. This will
cause PCI resources are assigned wrongly in some systems, and cause hang.
This is a regression since we deleted ACPI motherboard driver and use PNP
system driver.
[EMAIL PROTECTED]: fix text and coding-style a bit]
Signed-off-by: Li Shaohua <[EMAIL PROTECTED]>
Signed-off-by: Zhao Yakui <[EMAIL PROTECTED]>
Cc: Bjorn Helgaas <[EMAIL PROTECTED]>
Cc: Thomas Renninger <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/pnp/pnpacpi/rsparser.c | 15 +++++++++++++--
include/linux/pnp.h | 4 ++--
2 files changed, 15 insertions(+), 4 deletions(-)
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 11adab1..3c5eb37 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -83,9 +83,11 @@ static void pnpacpi_parse_allocated_irqresource(struct
pnp_resource_table *res,
while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) &&
i < PNP_MAX_IRQ)
i++;
- if (i >= PNP_MAX_IRQ)
+ if (i >= PNP_MAX_IRQ) {
+ printk(KERN_ERR "pnpacpi: exceeded the max number of IRQ "
+ "resources: %d \n", PNP_MAX_IRQ);
return;
-
+ }
/*
* in IO-APIC mode, use overrided attribute. Two reasons:
* 1. BIOS bug in DSDT
@@ -181,6 +183,9 @@ static void pnpacpi_parse_allocated_dmaresource(struct
pnp_resource_table *res,
}
res->dma_resource[i].start = dma;
res->dma_resource[i].end = dma;
+ } else {
+ printk(KERN_ERR "pnpacpi: exceeded the max number of DMA "
+ "resources: %d \n", PNP_MAX_DMA);
}
}
@@ -202,6 +207,9 @@ static void pnpacpi_parse_allocated_ioresource(struct
pnp_resource_table *res,
}
res->port_resource[i].start = io;
res->port_resource[i].end = io + len - 1;
+ } else {
+ printk(KERN_ERR "pnpacpi: exceeded the max number of IO "
+ "resources: %d \n", PNP_MAX_PORT);
}
}
@@ -225,6 +233,9 @@ static void pnpacpi_parse_allocated_memresource(struct
pnp_resource_table *res,
res->mem_resource[i].start = mem;
res->mem_resource[i].end = mem + len - 1;
+ } else {
+ printk(KERN_ERR "pnpacpi: exceeded the max number of mem "
+ "resources: %d\n", PNP_MAX_MEM);
}
}
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 664d68c..0a0426c 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -13,8 +13,8 @@
#include <linux/errno.h>
#include <linux/mod_devicetable.h>
-#define PNP_MAX_PORT 8
-#define PNP_MAX_MEM 4
+#define PNP_MAX_PORT 24
+#define PNP_MAX_MEM 12
#define PNP_MAX_IRQ 2
#define PNP_MAX_DMA 2
#define PNP_NAME_LEN 50
-
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