diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c index 1a138c83f8776306a075a9371f7fd14a7226985d..a0c44d16bf30c58559a6ed0489cb762c13593e32 100644 --- a/drivers/misc/cxl/api.c +++ b/drivers/misc/cxl/api.c @@ -336,6 +336,10 @@ int cxl_start_context(struct cxl_context *ctx, u64 wed, mmput(ctx->mm); } + /* + * Increment driver use count. Enables global TLBIs for hash + * and callbacks to handle the segment table + */ cxl_ctx_get(); if ((rc = cxl_ops->attach_process(ctx, kernel, wed, 0))) { diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c index 0761271d68c5613b23152c03522f6a388950ea86..4bfad9f6dc9f3aea35a472bec6dfcaee404a43ae 100644 --- a/drivers/misc/cxl/file.c +++ b/drivers/misc/cxl/file.c @@ -95,7 +95,6 @@ static int __afu_open(struct inode *inode, struct file *file, bool master) pr_devel("afu_open pe: %i\n", ctx->pe); file->private_data = ctx; - cxl_ctx_get(); /* indicate success */ rc = 0; @@ -225,6 +224,12 @@ static long afu_ioctl_start_work(struct cxl_context *ctx, if (ctx->mm) mmput(ctx->mm); + /* + * Increment driver use count. Enables global TLBIs for hash + * and callbacks to handle the segment table + */ + cxl_ctx_get(); + trace_cxl_attach(ctx, work.work_element_descriptor, work.num_interrupts, amr); if ((rc = cxl_ops->attach_process(ctx, false, work.work_element_descriptor, @@ -233,6 +238,7 @@ static long afu_ioctl_start_work(struct cxl_context *ctx, cxl_adapter_context_put(ctx->afu->adapter); put_pid(ctx->pid); ctx->pid = NULL; + cxl_ctx_put(); cxl_context_mm_count_put(ctx); goto out; }