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Subject[PATCH 1/7] misc: pci_endpoint_test: Avoid using module parameter to determine irqtype
Date
commit e03327122e2c8e6ae4565ef ("pci_endpoint_test: Add 2 ioctl
commands") uses module parameter in pci_endpoint_test_set_irq()
'irqtype' to check if irq vectors of a particular type is already
allocated. However with multi-function devices, irqtype will not
correctly reflect the irq type of the PCI device. Fix it here by
adding 'irqtype' for each PCI device to show the irq type of a
particular PCI device.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/misc/pci_endpoint_test.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index 215f9b8432a3..743ff4dcb3f0 100644
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -99,6 +99,7 @@ struct pci_endpoint_test {
struct completion irq_raised;
int last_irq;
int num_irqs;
+ int irq_type;
/* mutex to protect the ioctls */
struct mutex mutex;
struct miscdevice miscdev;
@@ -158,6 +159,7 @@ static void pci_endpoint_test_free_irq_vectors(struct pci_endpoint_test *test)
struct pci_dev *pdev = test->pdev;

pci_free_irq_vectors(pdev);
+ test->irq_type = IRQ_TYPE_UNDEFINED;
}

static bool pci_endpoint_test_alloc_irq_vectors(struct pci_endpoint_test *test,
@@ -192,6 +194,8 @@ static bool pci_endpoint_test_alloc_irq_vectors(struct pci_endpoint_test *test,
irq = 0;
res = false;
}
+
+ test->irq_type = type;
test->num_irqs = irq;

return res;
@@ -331,6 +335,7 @@ static bool pci_endpoint_test_copy(struct pci_endpoint_test *test, size_t size)
dma_addr_t orig_dst_phys_addr;
size_t offset;
size_t alignment = test->alignment;
+ int irq_type = test->irq_type;
u32 src_crc32;
u32 dst_crc32;

@@ -427,6 +432,7 @@ static bool pci_endpoint_test_write(struct pci_endpoint_test *test, size_t size)
dma_addr_t orig_phys_addr;
size_t offset;
size_t alignment = test->alignment;
+ int irq_type = test->irq_type;
u32 crc32;

if (size > SIZE_MAX - alignment)
@@ -495,6 +501,7 @@ static bool pci_endpoint_test_read(struct pci_endpoint_test *test, size_t size)
dma_addr_t orig_phys_addr;
size_t offset;
size_t alignment = test->alignment;
+ int irq_type = test->irq_type;
u32 crc32;

if (size > SIZE_MAX - alignment)
@@ -556,7 +563,7 @@ static bool pci_endpoint_test_set_irq(struct pci_endpoint_test *test,
return false;
}

- if (irq_type == req_irq_type)
+ if (test->irq_type == req_irq_type)
return true;

pci_endpoint_test_release_irq(test);
@@ -568,12 +575,10 @@ static bool pci_endpoint_test_set_irq(struct pci_endpoint_test *test,
if (!pci_endpoint_test_request_irq(test))
goto err;

- irq_type = req_irq_type;
return true;

err:
pci_endpoint_test_free_irq_vectors(test);
- irq_type = IRQ_TYPE_UNDEFINED;
return false;
}

@@ -653,6 +658,7 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
test->test_reg_bar = 0;
test->alignment = 0;
test->pdev = pdev;
+ test->irq_type = IRQ_TYPE_UNDEFINED;

if (no_msi)
irq_type = IRQ_TYPE_LEGACY;
--
2.17.1
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