The patch titled
pnp: make resource assignment functions return 0 (success) or -EBUSY (failure)
has been removed from the -mm tree. Its filename was
pnp-make-resource-assignment-functions-return-0-success-or-ebusy-failure.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: pnp: make resource assignment functions return 0 (success) or -EBUSY (failure)
From: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
This patch doesn't change any behavior; it just makes the return values
more conventional.
This changes pnp_assign_dma() from a void function to one that returns an
int, just like the other assignment functions. For now, at least,
pnp_assign_dma() always returns 0 (success), so it appears to never fail,
just like before.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx>
Acked-by: Rene Herman <rene.herman@xxxxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx>
Cc: Adam M Belay <abelay@xxxxxxx>
Cc: Li Shaohua <shaohua.li@xxxxxxxxx>
Cc: Matthieu Castet <castet.matthieu@xxxxxxx>
Cc: Thomas Renninger <trenn@xxxxxxx>
Cc: Jaroslav Kysela <perex@xxxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/pnp/manager.c | 41 +++++++++++++++++++++-------------------
1 file changed, 22 insertions(+), 19 deletions(-)
diff -puN drivers/pnp/manager.c~pnp-make-resource-assignment-functions-return-0-success-or-ebusy-failure drivers/pnp/manager.c
--- a/drivers/pnp/manager.c~pnp-make-resource-assignment-functions-return-0-success-or-ebusy-failure
+++ a/drivers/pnp/manager.c
@@ -26,7 +26,7 @@ static int pnp_assign_port(struct pnp_de
dev_dbg(&dev->dev, " io %d already set to %#llx-%#llx "
"flags %#lx\n", idx, (unsigned long long) res->start,
(unsigned long long) res->end, res->flags);
- return 1;
+ return 0;
}
res = &local_res;
@@ -51,13 +51,13 @@ static int pnp_assign_port(struct pnp_de
"(min %#llx max %#llx)\n", idx,
(unsigned long long) rule->min,
(unsigned long long) rule->max);
- return 0;
+ return -EBUSY;
}
}
__add:
pnp_add_io_resource(dev, res->start, res->end, res->flags);
- return 1;
+ return 0;
}
static int pnp_assign_mem(struct pnp_dev *dev, struct pnp_mem *rule, int idx)
@@ -69,7 +69,7 @@ static int pnp_assign_mem(struct pnp_dev
dev_dbg(&dev->dev, " mem %d already set to %#llx-%#llx "
"flags %#lx\n", idx, (unsigned long long) res->start,
(unsigned long long) res->end, res->flags);
- return 1;
+ return 0;
}
res = &local_res;
@@ -103,13 +103,13 @@ static int pnp_assign_mem(struct pnp_dev
"(min %#llx max %#llx)\n", idx,
(unsigned long long) rule->min,
(unsigned long long) rule->max);
- return 0;
+ return -EBUSY;
}
}
__add:
pnp_add_mem_resource(dev, res->start, res->end, res->flags);
- return 1;
+ return 0;
}
static int pnp_assign_irq(struct pnp_dev *dev, struct pnp_irq *rule, int idx)
@@ -126,7 +126,7 @@ static int pnp_assign_irq(struct pnp_dev
if (res) {
dev_dbg(&dev->dev, " irq %d already set to %d flags %#lx\n",
idx, (int) res->start, res->flags);
- return 1;
+ return 0;
}
res = &local_res;
@@ -154,14 +154,14 @@ static int pnp_assign_irq(struct pnp_dev
}
}
dev_dbg(&dev->dev, " couldn't assign irq %d\n", idx);
- return 0;
+ return -EBUSY;
__add:
pnp_add_irq_resource(dev, res->start, res->flags);
- return 1;
+ return 0;
}
-static void pnp_assign_dma(struct pnp_dev *dev, struct pnp_dma *rule, int idx)
+static int pnp_assign_dma(struct pnp_dev *dev, struct pnp_dma *rule, int idx)
{
struct resource *res, local_res;
int i;
@@ -175,7 +175,7 @@ static void pnp_assign_dma(struct pnp_de
if (res) {
dev_dbg(&dev->dev, " dma %d already set to %d flags %#lx\n",
idx, (int) res->start, res->flags);
- return;
+ return 0;
}
res = &local_res;
@@ -198,6 +198,7 @@ static void pnp_assign_dma(struct pnp_de
__add:
pnp_add_dma_resource(dev, res->start, res->flags);
+ return 0;
}
void pnp_init_resources(struct pnp_dev *dev)
@@ -243,25 +244,26 @@ static int pnp_assign_resources(struct p
irq = dev->independent->irq;
dma = dev->independent->dma;
while (port) {
- if (!pnp_assign_port(dev, port, nport))
+ if (pnp_assign_port(dev, port, nport) < 0)
goto fail;
nport++;
port = port->next;
}
while (mem) {
- if (!pnp_assign_mem(dev, mem, nmem))
+ if (pnp_assign_mem(dev, mem, nmem) < 0)
goto fail;
nmem++;
mem = mem->next;
}
while (irq) {
- if (!pnp_assign_irq(dev, irq, nirq))
+ if (pnp_assign_irq(dev, irq, nirq) < 0)
goto fail;
nirq++;
irq = irq->next;
}
while (dma) {
- pnp_assign_dma(dev, dma, ndma);
+ if (pnp_assign_dma(dev, dma, ndma) < 0)
+ goto fail;
ndma++;
dma = dma->next;
}
@@ -281,25 +283,26 @@ static int pnp_assign_resources(struct p
irq = dep->irq;
dma = dep->dma;
while (port) {
- if (!pnp_assign_port(dev, port, nport))
+ if (pnp_assign_port(dev, port, nport) < 0)
goto fail;
nport++;
port = port->next;
}
while (mem) {
- if (!pnp_assign_mem(dev, mem, nmem))
+ if (pnp_assign_mem(dev, mem, nmem) < 0)
goto fail;
nmem++;
mem = mem->next;
}
while (irq) {
- if (!pnp_assign_irq(dev, irq, nirq))
+ if (pnp_assign_irq(dev, irq, nirq) < 0)
goto fail;
nirq++;
irq = irq->next;
}
while (dma) {
- pnp_assign_dma(dev, dma, ndma);
+ if (pnp_assign_dma(dev, dma, ndma) < 0)
+ goto fail;
ndma++;
dma = dma->next;
}
_
Patches currently in -mm which might be from bjorn.helgaas@xxxxxx are
linux-next.patch
mm-only-enforce-acpi-resource-conflict-checks.patch
pnp-set-the-pnp_card-dma_mask-for-use-by-isapnp-cards.patch
isa-set-24-bit-dma_mask-for-isa-devices.patch
make-pnp_add_card_id-static.patch
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