diff options
Diffstat (limited to 'tools/virtio/linux/scatterlist.h')
| -rw-r--r-- | tools/virtio/linux/scatterlist.h | 20 |
1 files changed, 2 insertions, 18 deletions
diff --git a/tools/virtio/linux/scatterlist.h b/tools/virtio/linux/scatterlist.h index 68c9e2adc996..74d9e1825748 100644 --- a/tools/virtio/linux/scatterlist.h +++ b/tools/virtio/linux/scatterlist.h @@ -1,6 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef SCATTERLIST_H #define SCATTERLIST_H #include <linux/kernel.h> +#include <linux/bug.h> struct scatterlist { unsigned long page_link; @@ -35,7 +37,6 @@ static inline void sg_assign_page(struct scatterlist *sg, struct page *page) */ BUG_ON((unsigned long) page & 0x03); #ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); BUG_ON(sg_is_chain(sg)); #endif sg->page_link = page_link | (unsigned long) page; @@ -66,7 +67,6 @@ static inline void sg_set_page(struct scatterlist *sg, struct page *page, static inline struct page *sg_page(struct scatterlist *sg) { #ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); BUG_ON(sg_is_chain(sg)); #endif return (struct page *)((sg)->page_link & ~0x3); @@ -115,9 +115,6 @@ static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents, **/ static inline void sg_mark_end(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif /* * Set termination bit, clear potential chain bit */ @@ -135,17 +132,11 @@ static inline void sg_mark_end(struct scatterlist *sg) **/ static inline void sg_unmark_end(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif sg->page_link &= ~0x02; } static inline struct scatterlist *sg_next(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif if (sg_is_last(sg)) return NULL; @@ -159,13 +150,6 @@ static inline struct scatterlist *sg_next(struct scatterlist *sg) static inline void sg_init_table(struct scatterlist *sgl, unsigned int nents) { memset(sgl, 0, sizeof(*sgl) * nents); -#ifdef CONFIG_DEBUG_SG - { - unsigned int i; - for (i = 0; i < nents; i++) - sgl[i].sg_magic = SG_MAGIC; - } -#endif sg_mark_end(&sgl[nents - 1]); } |