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lib/scatterlist: Fix offset type in sg_alloc_table_from_pages

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Scatterlist entries have an unsigned int for the offset so
correct the sg_alloc_table_from_pages function accordingly.

Since these are offsets withing a page, unsigned int is
wide enough.

Also converts callers which were using unsigned long locally
with the lower_32_bits annotation to make it explicitly
clear what is happening.

v2: Use offset_in_page. (Chris Wilson)

Signed-off-by: Tvrtko Ursulin <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Pawel Osciak <[email protected]>
Cc: Marek Szyprowski <[email protected]>
Cc: Kyungmin Park <[email protected]>
Cc: Tomasz Stanislawski <[email protected]>
Cc: Matt Porter <[email protected]>
Cc: Alexandre Bounine <[email protected]>
Cc: [email protected]
Cc: [email protected]
Acked-by: Marek Szyprowski <[email protected]> (v1)
Reviewed-by: Chris Wilson <[email protected]>
Reviewed-by: Mauro Carvalho Chehab <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
This commit is contained in:
Tvrtko Ursulin 2017-07-31 19:55:08 +01:00
commit c4860ad605
4 changed files with 6 additions and 6 deletions
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4
drivers/rapidio/devices/rio_mport_cdev.c
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@ -876,10 +876,10 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode,
* offset within the internal buffer specified by handle parameter.
*/
if (xfer->loc_addr) {
unsigned long offset;
unsigned int offset;
long pinned;
offset = (unsigned long)(uintptr_t)xfer->loc_addr & ~PAGE_MASK;
offset = lower_32_bits(offset_in_page(xfer->loc_addr));
nr_pages = PAGE_ALIGN(xfer->length + offset) >> PAGE_SHIFT;
page_list = kmalloc_array(nr_pages,