openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

dma-mapping fixes for Linux 5.15 

- page align size in sparc32 arch_dma_alloc (Andreas Larsson)
  - tone down a new dma-debug message (Hamza Mahfooz)
  - fix the kerneldoc for dma_map_sg_attrs (me)
 -----BEGIN PGP SIGNATURE-----
 
 iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAmFEeXALHGhjaEBsc3Qu
 ZGUACgkQD55TZVIEUYNFOBAAvGKfkEEk8AINfUPJS5uKrE+/xlO54XvWNSEjFrwS
 skVdLEB1MGU2jS4R1V47P7du5EVM8wn3fnf8oTbx1iPQNaYTEIhxNL9b32stCtxj
 RzB7g7CPmLdAhA4V9tUSMJzQWlxWcYDkk36zNOC/P1qSfOVA7Z0OXjRJF4p+7JXF
 +vLG2+6sCd9ZLQxFSxsZDXlLbQG0j6PxJDjjSEQGYGtN151PpBCjr4yh9wdQmi5J
 CIOtLuOUcfmHaAp/QqNxt+7g6n5+oenFUqnNhQodFt4Y/rA3+rO9N9+XXk3tlCle
 29S7NyPzNwCQuSoQFMX5ZNrx+ZsoHOV+0pk+YdnBhHXZQpj46oefkAfltl1V2RPr
 gPLzGpkwg9v6h2qOhaJjt3oACMGcQ3ueIGP5xRvLhgdjmLCweaNnRbIE+8sGL5GP
 ugSUkaLpRv5crcszdHow13yP+HL2kI+p+uQRC8bxQbhiZg+NJGhFOt7w8UWRNxpa
 3iiW69IT+qalEWBX8kG4FqYtPYbCcHI5yNBwV/IZjKr3eAPn1DgB9i42zX6tmKIP
 DcBVentG02H6k1iqANBkUnuENnNWGUH14UoBYqKMr+O7s+oJzc746dTmZO25oon0
 3MRPd9nANY6HPAJLMjB96dSy09yKelx9/JW2TFOAQnNED8TqbmAAKrm7zjzALHOc
 qlA=
 =ysLN
 -----END PGP SIGNATURE-----

Merge tag 'dma-mapping-5.15-1' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fixes from Christoph Hellwig:

 - page align size in sparc32 arch_dma_alloc (Andreas Larsson)

 - tone down a new dma-debug message (Hamza Mahfooz)

 - fix the kerneldoc for dma_map_sg_attrs (me)

* tag 'dma-mapping-5.15-1' of git://git.infradead.org/users/hch/dma-mapping:
  sparc32: page align size in arch_dma_alloc
  dma-debug: prevent an error message from causing runtime problems
  dma-mapping: fix the kerneldoc for dma_map_sg_attrs
This commit is contained in:
Linus Torvalds 2021-09-17 11:54:48 -07:00
parent 7639afad8b 59583f7476
commit b9b11b133b
3 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/sparc/kernel/ioport.c
View File

@ -356,7 +356,9 @@ void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
void arch_dma_free(struct device *dev, size_t size, void *cpu_addr, void arch_dma_free(struct device *dev, size_t size, void *cpu_addr,
dma_addr_t dma_addr, unsigned long attrs) dma_addr_t dma_addr, unsigned long attrs)
{ {
if (!sparc_dma_free_resource(cpu_addr, PAGE_ALIGN(size))) size = PAGE_ALIGN(size);
if (!sparc_dma_free_resource(cpu_addr, size))
return; return;
dma_make_coherent(dma_addr, size); dma_make_coherent(dma_addr, size);

3
kernel/dma/debug.c
View File

@ -567,7 +567,8 @@ static void add_dma_entry(struct dma_debug_entry *entry)
pr_err("cacheline tracking ENOMEM, dma-debug disabled\n"); pr_err("cacheline tracking ENOMEM, dma-debug disabled\n");
global_disable = true; global_disable = true;
} else if (rc == -EEXIST) { } else if (rc == -EEXIST) {
pr_err("cacheline tracking EEXIST, overlapping mappings aren't supported\n"); err_printk(entry->dev, entry,
"cacheline tracking EEXIST, overlapping mappings aren't supported\n");
} }
} }

1
kernel/dma/mapping.c
View File

@ -207,6 +207,7 @@ static int __dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
* dma_map_sg_attrs - Map the given buffer for DMA * dma_map_sg_attrs - Map the given buffer for DMA
* @dev: The device for which to perform the DMA operation * @dev: The device for which to perform the DMA operation
* @sg: The sg_table object describing the buffer * @sg: The sg_table object describing the buffer
* @nents: Number of entries to map
* @dir: DMA direction * @dir: DMA direction
* @attrs: Optional DMA attributes for the map operation * @attrs: Optional DMA attributes for the map operation
* *