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Subject[PATCH 2.6.19-rc1 1/2] ehca: fix ehca device registration
Date
Hi Roland!
Below is a patch of ehca, which fixes a bug (crash) that occured when ib_ehca
is loaded after ib_ipoib. This patch initializes struct ehca_shca with
struct device*, then creates internal resources and finally registers the
ehca IB device. And that is the proper sequence to do.
Thanks!
Nam Nguyen


Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
---

ehca_main.c | 36 +++++++++++++++++++-----------------
1 file changed, 19 insertions(+), 17 deletions(-)

diff -Nurp infiniband_orig/drivers/infiniband/hw/ehca/ehca_main.c infiniband_work/drivers/infiniband/hw/ehca/ehca_main.c
--- infiniband_orig/drivers/infiniband/hw/ehca/ehca_main.c 2006-10-02 22:08:57.000000000 +0200
+++ infiniband_work/drivers/infiniband/hw/ehca/ehca_main.c 2006-10-02 18:29:53.000000000 +0200
@@ -49,7 +49,7 @@
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
-MODULE_VERSION("SVNEHCA_0016");
+MODULE_VERSION("SVNEHCA_0017");

int ehca_open_aqp1 = 0;
int ehca_debug_level = 0;
@@ -239,7 +239,7 @@ init_node_guid1:
return ret;
}

-int ehca_register_device(struct ehca_shca *shca)
+int ehca_init_device(struct ehca_shca *shca)
{
int ret;

@@ -317,11 +317,6 @@ int ehca_register_device(struct ehca_shc
/* shca->ib_device.process_mad = ehca_process_mad; */
shca->ib_device.mmap = ehca_mmap;

- ret = ib_register_device(&shca->ib_device);
- if (ret)
- ehca_err(&shca->ib_device,
- "ib_register_device() failed ret=%x", ret);
-
return ret;
}

@@ -561,9 +556,9 @@ static int __devinit ehca_probe(struct i
goto probe1;
}

- ret = ehca_register_device(shca);
+ ret = ehca_init_device(shca);
if (ret) {
- ehca_gen_err("Cannot register Infiniband device");
+ ehca_gen_err("Cannot init ehca device struct");
goto probe1;
}

@@ -571,7 +566,7 @@ static int __devinit ehca_probe(struct i
ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
if (ret) {
ehca_err(&shca->ib_device, "Cannot create EQ.");
- goto probe2;
+ goto probe1;
}

ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
@@ -600,6 +595,13 @@ static int __devinit ehca_probe(struct i
goto probe5;
}

+ ret = ib_register_device(&shca->ib_device);
+ if (ret) {
+ ehca_err(&shca->ib_device,
+ "ib_register_device() failed ret=%x", ret);
+ goto probe6;
+ }
+
/* create AQP1 for port 1 */
if (ehca_open_aqp1 == 1) {
shca->sport[0].port_state = IB_PORT_DOWN;
@@ -607,7 +609,7 @@ static int __devinit ehca_probe(struct i
if (ret) {
ehca_err(&shca->ib_device,
"Cannot create AQP1 for port 1.");
- goto probe6;
+ goto probe7;
}
}

@@ -618,7 +620,7 @@ static int __devinit ehca_probe(struct i
if (ret) {
ehca_err(&shca->ib_device,
"Cannot create AQP1 for port 2.");
- goto probe7;
+ goto probe8;
}
}

@@ -630,12 +632,15 @@ static int __devinit ehca_probe(struct i

return 0;

-probe7:
+probe8:
ret = ehca_destroy_aqp1(&shca->sport[0]);
if (ret)
ehca_err(&shca->ib_device,
"Cannot destroy AQP1 for port 1. ret=%x", ret);

+probe7:
+ ib_unregister_device(&shca->ib_device);
+
probe6:
ret = ehca_dereg_internal_maxmr(shca);
if (ret)
@@ -660,9 +665,6 @@ probe3:
ehca_err(&shca->ib_device,
"Cannot destroy EQ. ret=%x", ret);

-probe2:
- ib_unregister_device(&shca->ib_device);
-
probe1:
ib_dealloc_device(&shca->ib_device);

@@ -750,7 +752,7 @@ int __init ehca_module_init(void)
int ret;

printk(KERN_INFO "eHCA Infiniband Device Driver "
- "(Rel.: SVNEHCA_0016)\n");
+ "(Rel.: SVNEHCA_0017)\n");
idr_init(&ehca_qp_idr);
idr_init(&ehca_cq_idr);
spin_lock_init(&ehca_qp_idr_lock);diff -Nurp infiniband_orig/drivers/infiniband/hw/ehca/ehca_main.c infiniband_work/drivers/infiniband/hw/ehca/ehca_main.c
--- infiniband_orig/drivers/infiniband/hw/ehca/ehca_main.c 2006-10-02 22:08:57.000000000 +0200
+++ infiniband_work/drivers/infiniband/hw/ehca/ehca_main.c 2006-10-02 18:29:53.000000000 +0200
@@ -49,7 +49,7 @@
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
MODULE_DESCRIPTION("IBM eServer HCA InfiniBand Device Driver");
-MODULE_VERSION("SVNEHCA_0016");
+MODULE_VERSION("SVNEHCA_0017");

int ehca_open_aqp1 = 0;
int ehca_debug_level = 0;
@@ -239,7 +239,7 @@ init_node_guid1:
return ret;
}

-int ehca_register_device(struct ehca_shca *shca)
+int ehca_init_device(struct ehca_shca *shca)
{
int ret;

@@ -317,11 +317,6 @@ int ehca_register_device(struct ehca_shc
/* shca->ib_device.process_mad = ehca_process_mad; */
shca->ib_device.mmap = ehca_mmap;

- ret = ib_register_device(&shca->ib_device);
- if (ret)
- ehca_err(&shca->ib_device,
- "ib_register_device() failed ret=%x", ret);
-
return ret;
}

@@ -561,9 +556,9 @@ static int __devinit ehca_probe(struct i
goto probe1;
}

- ret = ehca_register_device(shca);
+ ret = ehca_init_device(shca);
if (ret) {
- ehca_gen_err("Cannot register Infiniband device");
+ ehca_gen_err("Cannot init ehca device struct");
goto probe1;
}

@@ -571,7 +566,7 @@ static int __devinit ehca_probe(struct i
ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048);
if (ret) {
ehca_err(&shca->ib_device, "Cannot create EQ.");
- goto probe2;
+ goto probe1;
}

ret = ehca_create_eq(shca, &shca->neq, EHCA_NEQ, 513);
@@ -600,6 +595,13 @@ static int __devinit ehca_probe(struct i
goto probe5;
}

+ ret = ib_register_device(&shca->ib_device);
+ if (ret) {
+ ehca_err(&shca->ib_device,
+ "ib_register_device() failed ret=%x", ret);
+ goto probe6;
+ }
+
/* create AQP1 for port 1 */
if (ehca_open_aqp1 == 1) {
shca->sport[0].port_state = IB_PORT_DOWN;
@@ -607,7 +609,7 @@ static int __devinit ehca_probe(struct i
if (ret) {
ehca_err(&shca->ib_device,
"Cannot create AQP1 for port 1.");
- goto probe6;
+ goto probe7;
}
}

@@ -618,7 +620,7 @@ static int __devinit ehca_probe(struct i
if (ret) {
ehca_err(&shca->ib_device,
"Cannot create AQP1 for port 2.");
- goto probe7;
+ goto probe8;
}
}

@@ -630,12 +632,15 @@ static int __devinit ehca_probe(struct i

return 0;

-probe7:
+probe8:
ret = ehca_destroy_aqp1(&shca->sport[0]);
if (ret)
ehca_err(&shca->ib_device,
"Cannot destroy AQP1 for port 1. ret=%x", ret);

+probe7:
+ ib_unregister_device(&shca->ib_device);
+
probe6:
ret = ehca_dereg_internal_maxmr(shca);
if (ret)
@@ -660,9 +665,6 @@ probe3:
ehca_err(&shca->ib_device,
"Cannot destroy EQ. ret=%x", ret);

-probe2:
- ib_unregister_device(&shca->ib_device);
-
probe1:
ib_dealloc_device(&shca->ib_device);

@@ -750,7 +752,7 @@ int __init ehca_module_init(void)
int ret;

printk(KERN_INFO "eHCA Infiniband Device Driver "
- "(Rel.: SVNEHCA_0016)\n");
+ "(Rel.: SVNEHCA_0017)\n");
idr_init(&ehca_qp_idr);
idr_init(&ehca_cq_idr);
spin_lock_init(&ehca_qp_idr_lock);
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