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Message-Id: <20180717205712.29495-31-toddpoynor@gmail.com>
Date: Tue, 17 Jul 2018 13:57:10 -0700
From: Todd Poynor <toddpoynor@...il.com>
To: Rob Springer <rspringer@...gle.com>,
John Joseph <jnjoseph@...gle.com>,
Ben Chan <benchan@...omium.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Zhongze Hu <frankhu@...omium.org>, Simon Que <sque@...omium.org>,
Dmitry Torokhov <dtor@...omium.org>,
Guenter Roeck <groeck@...omium.org>,
devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
Todd Poynor <toddpoynor@...gle.com>
Subject: [PATCH 30/32] staging: gasket: gasket_mmap use PAGE_MASK
From: Todd Poynor <toddpoynor@...gle.com>
gasket_mmap use PAGE_MASK, instead of performing math on PAGE_SIZE, for
simplicity and clarity.
Reported-by: Guenter Roeck <groeck@...omium.org>
Signed-off-by: Simon Que <sque@...omium.org>
Signed-off-by: Todd Poynor <toddpoynor@...gle.com>
---
drivers/staging/gasket/gasket_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/gasket/gasket_core.c b/drivers/staging/gasket/gasket_core.c
index 9a821614b0334..98d5a200aaa5a 100644
--- a/drivers/staging/gasket/gasket_core.c
+++ b/drivers/staging/gasket/gasket_core.c
@@ -1594,7 +1594,7 @@ static int gasket_mmap(struct file *filp, struct vm_area_struct *vma)
}
driver_desc = gasket_dev->internal_desc->driver_desc;
- if (vma->vm_start & (PAGE_SIZE - 1)) {
+ if (vma->vm_start & ~PAGE_MASK) {
gasket_log_error(
gasket_dev, "Base address not page-aligned: 0x%p\n",
(void *)vma->vm_start);
--
2.18.0.203.gfac676dfb9-goog
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