linux-kernel - [PATCH resend] staging: gasket: convert gasket_mmap_has

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Message-Id: <20180715184336.195821-1-toddpoynor@gmail.com>
Date:   Sun, 15 Jul 2018 11:43:36 -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 resend] staging: gasket: convert gasket_mmap_has_permissions to bool return

From: Todd Poynor <toddpoynor@...gle.com>

gasket_mmap_has_permissions() should return a boolean value.

Signed-off-by: Zhongze Hu <frankhu@...omium.org>
Signed-off-by: Todd Poynor <toddpoynor@...gle.com>
---
 drivers/staging/gasket/gasket_core.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/gasket/gasket_core.c b/drivers/staging/gasket/gasket_core.c
index 4ac239c33ea3..dd2daa2e1c31 100644
--- a/drivers/staging/gasket/gasket_core.c
+++ b/drivers/staging/gasket/gasket_core.c
@@ -1232,19 +1232,19 @@ static int gasket_release(struct inode *inode, struct file *file)
  * that the provided descriptor/range is of adequate size to hold the range to
  * be mapped.
  */
-static int gasket_mmap_has_permissions(
+static bool gasket_mmap_has_permissions(
 	struct gasket_dev *gasket_dev, struct vm_area_struct *vma,
 	int bar_permissions)
 {
 	int requested_permissions;
 	/* Always allow sysadmin to access. */
 	if (capable(CAP_SYS_ADMIN))
-		return 1;
+		return true;
 
 	/* Never allow non-sysadmins to access to a dead device. */
 	if (gasket_dev->status != GASKET_STATUS_ALIVE) {
 		gasket_log_info(gasket_dev, "Device is dead.");
-		return 0;
+		return false;
 	}
 
 	/* Make sure that no wrong flags are set. */
@@ -1256,7 +1256,7 @@ static int gasket_mmap_has_permissions(
 			"Attempting to map a region with requested permissions "
 			"0x%x, but region has permissions 0x%x.",
 			requested_permissions, bar_permissions);
-		return 0;
+		return false;
 	}
 
 	/* Do not allow a non-owner to write. */
@@ -1266,10 +1266,10 @@ static int gasket_mmap_has_permissions(
 			gasket_dev,
 			"Attempting to mmap a region for write without owning "
 			"device.");
-		return 0;
+		return false;
 	}
 
-	return 1;
+	return true;
 }
 
 /*
-- 
2.18.0.203.gfac676dfb9-goog

Resending, extracted from the previous stack of patches that needs
other cleanups.