lkml.org 
[lkml]   [2018]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH resend] staging: gasket: don't release coherent mappings
Date
From: Todd Poynor <toddpoynor@google.com>

coherent address mappings aren't backed by a struct page, don't need to
be released, and don't count as an active page in the page table
bookkeeping.

Signed-off-by: Simon Que <sque@chromium.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
---
drivers/staging/gasket/gasket_page_table.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c
index dcd52e141f95..e71baa11c8de 100644
--- a/drivers/staging/gasket/gasket_page_table.c
+++ b/drivers/staging/gasket/gasket_page_table.c
@@ -1233,7 +1233,7 @@ static void gasket_perform_unmapping(
dma_unmap_page(pg_tbl->device, ptes[i].dma_addr,
PAGE_SIZE, DMA_FROM_DEVICE);
}
- if (gasket_release_page(ptes[i].page))
+ if (ptes[i].page && gasket_release_page(ptes[i].page))
--pg_tbl->num_active_pages;
}
ptes[i].status = PTE_FREE;
--
2.18.0.203.gfac676dfb9-goog
Resending, extracted from the previous stack of patches that needs
other cleanups.
\
 
 \ /
  Last update: 2018-07-15 22:07    [W:0.040 / U:0.492 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site