git: 0b9bc97342f9 - main - LinuxKPI: add DMA_MAPPING_ERROR

The branch main has been updated by bz:

URL: https://cgit.FreeBSD.org/src/commit/?id=0b9bc97342f98a911985ace5527aef97863dfd23

commit 0b9bc97342f98a911985ace5527aef97863dfd23
Author:     Bjoern A. Zeeb <bz@FreeBSD.org>
AuthorDate: 2022-09-23 22:13:19 +0000
Commit:     Bjoern A. Zeeb <bz@FreeBSD.org>
CommitDate: 2022-09-26 19:42:02 +0000

    LinuxKPI: add DMA_MAPPING_ERROR
    
    While we deal with 0 returned, some drivers directly use and check for
    DMA_MAPPING_ERROR.  Add the case and check for both in dma_mapping_error().
    
    MFC after:      1 week
    Reviewed by:    hselasky
    Differential Revision: https://reviews.freebsd.org/D36686
---
 sys/compat/linuxkpi/common/include/linux/dma-mapping.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/compat/linuxkpi/common/include/linux/dma-mapping.h b/sys/compat/linuxkpi/common/include/linux/dma-mapping.h
index 8401006fbf5f..d3d25fcce857 100644
--- a/sys/compat/linuxkpi/common/include/linux/dma-mapping.h
+++ b/sys/compat/linuxkpi/common/include/linux/dma-mapping.h
@@ -288,11 +288,15 @@ dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
 {
 }
 
+#define	DMA_MAPPING_ERROR	(~(dma_addr_t)0)
+
 static inline int
 dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
 {
 
-	return (dma_addr == 0);
+	if (dma_addr == 0 || dma_addr == DMA_MAPPING_ERROR)
+		return (-ENOMEM);
+	return (0);
 }
 
 static inline unsigned int dma_set_max_seg_size(struct device *dev,