Staging: kpc2000: kpc_dma: Remove comparison to NULL. (0af192c7) · Commits · 戴 / test

drivers/staging/kpc2000/kpc_dma/dma.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -236,7 +236,7 @@ int count_descriptors_available(struct kpc_dma_device *eng)
		struct kpc_dma_descriptor *cur = eng->desc_next;

		while (cur != eng->desc_completed) {
		BUG_ON(cur == NULL);
		BUG_ON(!cur);
		count++;
		cur = cur->Next;
		}

+6 −6

Original line number	Diff line number	Diff line
		@@ -124,7 +124,7 @@ static int kpc_dma_transfer(struct dev_private_data *priv,
		pcnt = count_parts_for_sge(sg);
		for (p = 0 ; p < pcnt ; p++) {
		// Fill out the descriptor
		BUG_ON(desc == NULL);
		BUG_ON(!desc);
		clear_desc(desc);
		if (p != pcnt-1) {
		desc->DescByteCount = 0x80000;
		@@ -203,11 +203,11 @@ void transfer_complete_cb(struct aio_cb_data *acd, size_t xfr_count, u32 flags)
		{
		unsigned int i;

		BUG_ON(acd == NULL);
		BUG_ON(acd->user_pages == NULL);
		BUG_ON(acd->sgt.sgl == NULL);
		BUG_ON(acd->ldev == NULL);
		BUG_ON(acd->ldev->pldev == NULL);
		BUG_ON(!acd);
		BUG_ON(!acd->user_pages);
		BUG_ON(!acd->sgt.sgl);
		BUG_ON(!acd->ldev);
		BUG_ON(!acd->ldev->pldev);

		for (i = 0 ; i < acd->page_count ; i++) {
		if (!PageReserved(acd->user_pages[i])) {

+2 −2

Original line number	Diff line number	Diff line
		@@ -198,14 +198,14 @@ u32 GetEngineCompletePtr(struct kpc_dma_device *eng)
		static inline
		void lock_engine(struct kpc_dma_device *eng)
		{
		BUG_ON(eng == NULL);
		BUG_ON(!eng);
		mutex_lock(&eng->sem);
		}

		static inline
		void unlock_engine(struct kpc_dma_device *eng)
		{
		BUG_ON(eng == NULL);
		BUG_ON(!eng);
		mutex_unlock(&eng->sem);
		}