[PATCH v4 1/2] crypto: qat - don't release uninitialized resources

[Tong Zhang]

adf_vf_isr_resource_alloc() is not unwinding correctly when error
happens and it tris to release uninitialized resources.
To fix this, only release initialized resources.

[    1.792845] Trying to free already-free IRQ 11
[    1.793091] WARNING: CPU: 0 PID: 182 at kernel/irq/manage.c:1821 
free_irq+0x202/0x380
[    1.801340] Call Trace:
[    1.801477]  adf_vf_isr_resource_free+0x32/0xb0 [intel_qat]
[    1.801785]  adf_vf_isr_resource_alloc+0x14d/0x150 [intel_qat]
[    1.802105]  adf_dev_init+0xba/0x140 [intel_qat]

Signed-off-by: Tong Zhang <ztong0...@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevche...@gmail.com>
Fixes: dd0f368398ea ("crypto: qat - Add qat dh895xcc VF driver")
Acked-by: Giovanni Cabiddu <giovanni.cabi...@intel.com>
---
 drivers/crypto/qat/qat_common/adf_vf_isr.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/adf_vf_isr.c 
b/drivers/crypto/qat/qat_common/adf_vf_isr.c
index 38d316a42ba6..888388acb6bd 100644
--- a/drivers/crypto/qat/qat_common/adf_vf_isr.c
+++ b/drivers/crypto/qat/qat_common/adf_vf_isr.c
@@ -261,17 +261,26 @@ int adf_vf_isr_resource_alloc(struct adf_accel_dev 
*accel_dev)
                goto err_out;
 
        if (adf_setup_pf2vf_bh(accel_dev))
-               goto err_out;
+               goto err_disable_msi;
 
        if (adf_setup_bh(accel_dev))
-               goto err_out;
+               goto err_cleanup_pf2vf_bh;
 
        if (adf_request_msi_irq(accel_dev))
-               goto err_out;
+               goto err_cleanup_bh;
 
        return 0;
+
+err_cleanup_bh:
+       adf_cleanup_bh(accel_dev);
+
+err_cleanup_pf2vf_bh:
+       adf_cleanup_pf2vf_bh(accel_dev);
+
+err_disable_msi:
+       adf_disable_msi(accel_dev);
+
 err_out:
-       adf_vf_isr_resource_free(accel_dev);
        return -EFAULT;
 }
 EXPORT_SYMBOL_GPL(adf_vf_isr_resource_alloc);
-- 
2.25.1