cxl: fix leak of IRQ names in cxl_free_afu_irqs()

cxl_free_afu_irqs() doesn't free IRQ names when it releases an AFU's IRQ
ranges. The userspace API equivalent in afu_release_irqs() calls
afu_irq_name_free() to release the IRQ names.

Call afu_irq_name_free() in cxl_free_afu_irqs() to release the IRQ names.
Make afu_irq_name_free() non-static to allow this.

Reported-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Fixes: 6f7f0b3df6d4 ("cxl: Add AFU virtual PHB and kernel API")
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c
index 8af12c884b04eeb870d21ae2bb4bf15e0cfb76c4..103baf0e0c5bfd9aa23537adf12f6035bb427d86 100644 (file)
--- a/drivers/misc/cxl/api.c
+++ b/drivers/misc/cxl/api.c
@@ -105,6 +105,7 @@ EXPORT_SYMBOL_GPL(cxl_allocate_afu_irqs);
 
 void cxl_free_afu_irqs(struct cxl_context *ctx)
 {
+       afu_irq_name_free(ctx);
        cxl_release_irq_ranges(&ctx->irqs, ctx->afu->adapter);
 }
 EXPORT_SYMBOL_GPL(cxl_free_afu_irqs);

diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h
index 1c30ef77073d607cd250ade57c08b110fffd092f..0cfb9c129f273cbdf0a408c6b5d3008bd308596d 100644 (file)
--- a/drivers/misc/cxl/cxl.h
+++ b/drivers/misc/cxl/cxl.h
@@ -677,6 +677,7 @@ int cxl_register_serr_irq(struct cxl_afu *afu);
 void cxl_release_serr_irq(struct cxl_afu *afu);
 int afu_register_irqs(struct cxl_context *ctx, u32 count);
 void afu_release_irqs(struct cxl_context *ctx, void *cookie);
+void afu_irq_name_free(struct cxl_context *ctx);
 irqreturn_t cxl_slice_irq_err(int irq, void *data);
 
 int cxl_debugfs_init(void);

diff --git a/drivers/misc/cxl/irq.c b/drivers/misc/cxl/irq.c
index 583b42afeda2355da2e606f4fbc33546445a8df6..38b57d65b731bb0516b994b64e58f3c5c641c842 100644 (file)
--- a/drivers/misc/cxl/irq.c
+++ b/drivers/misc/cxl/irq.c
@@ -414,7 +414,7 @@ void cxl_release_psl_irq(struct cxl_afu *afu)
        kfree(afu->psl_irq_name);
 }
 
-static void afu_irq_name_free(struct cxl_context *ctx)
+void afu_irq_name_free(struct cxl_context *ctx)
 {
        struct cxl_irq_name *irq_name, *tmp;