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Commit dca41306 authored by Rusty Russell's avatar Rusty Russell
Browse files

param: remove unnecessary writable charp 



sysfs-writable charp arguments need to be locked against modification
(since the old ones may be kfreed underneath us).  String arguments
are much simpler, so use them for small strings (eg. IFNAMSIZ).

lkdtm only uses the parameters at module initialization time, so there's
not much point making them writable.

Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Reviewed-by: default avatarTakashi Iwai <tiwai@suse.de>
Tested-by: default avatarPhil Carmody <ext-phil.2.carmody@nokia.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: M. Mohan Kumar <mohan@in.ibm.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: Julia Lawall <julia@diku.dk>
Cc: devel@driverdev.osuosl.org
parent 546970bc

drivers/misc/lkdtm.c

+2 −2
Original line number Diff line number Diff line
@@ -124,9 +124,9 @@ static int count = DEFAULT_COUNT; 
module_param(recur_count, int, 0644);

MODULE_PARM_DESC(recur_count, " Recursion level for the stack overflow test, "\

				 "default is 10");

module_param(cpoint_name, charp, 0644);

module_param(cpoint_name, charp, 0444);

MODULE_PARM_DESC(cpoint_name, " Crash Point, where kernel is to be crashed");

module_param(cpoint_type, charp, 0644);

module_param(cpoint_type, charp, 0444);

MODULE_PARM_DESC(cpoint_type, " Crash Point Type, action to be taken on "\

				"hitting the crash point");

module_param(cpoint_count, int, 0644);

drivers/staging/rtl8187se/r8180_core.c

+3 −3
Original line number Diff line number Diff line
@@ -61,7 +61,7 @@ static struct pci_device_id rtl8180_pci_id_tbl[] __devinitdata = { 
};





static char *ifname = "wlan%d";

static char ifname[IFNAMSIZ] = "wlan%d";

static int hwseqnum = 0;

static int hwwep = 0;

static int channels = 0x3fff;
@@ -72,7 +72,7 @@ MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>"); 
MODULE_DESCRIPTION("Linux driver for Realtek RTL8180 / RTL8185 WiFi cards");





module_param(ifname, charp, S_IRUGO|S_IWUSR);

module_param_string(ifname, ifname, sizeof(ifname), S_IRUGO|S_IWUSR);

module_param(hwseqnum, int, S_IRUGO|S_IWUSR);

module_param(hwwep, int, S_IRUGO|S_IWUSR);

module_param(channels, int, S_IRUGO|S_IWUSR);
@@ -3609,7 +3609,7 @@ static int __devinit rtl8180_pci_probe(struct pci_dev *pdev, 


	if (dev_alloc_name(dev, ifname) < 0) {

		DMESG("Oops: devname already taken! Trying wlan%%d...\n");

		ifname = "wlan%d";

		strcpy(ifname, "wlan%d");

		dev_alloc_name(dev, ifname);

	}

drivers/staging/rtl8192e/r8192E_core.c

+3 −3
Original line number Diff line number Diff line
@@ -112,7 +112,7 @@ static const struct pci_device_id rtl8192_pci_id_tbl[] __devinitdata = { 
	{}

};



static char* ifname = "wlan%d";

static char ifname[IFNAMSIZ] = "wlan%d";

static int hwwep = 1; //default use hw. set 0 to use software security

static int channels = 0x3fff;
@@ -123,7 +123,7 @@ MODULE_DEVICE_TABLE(pci, rtl8192_pci_id_tbl); 
MODULE_DESCRIPTION("Linux driver for Realtek RTL819x WiFi cards");





module_param(ifname, charp, S_IRUGO|S_IWUSR );

module_param_string(ifname, ifname, sizeof(ifname), S_IRUGO|S_IWUSR);

//module_param(hwseqnum,int, S_IRUGO|S_IWUSR);

module_param(hwwep,int, S_IRUGO|S_IWUSR);

module_param(channels,int, S_IRUGO|S_IWUSR);
@@ -6446,7 +6446,7 @@ static int __devinit rtl8192_pci_probe(struct pci_dev *pdev, 


	if (dev_alloc_name(dev, ifname) < 0){

                RT_TRACE(COMP_INIT, "Oops: devname already taken! Trying wlan%%d...\n");

		ifname = "wlan%d";

		strcpy(ifname, "wlan%d");

		dev_alloc_name(dev, ifname);

        }

drivers/staging/rtl8192su/r8192U_core.c

+3 −3
Original line number Diff line number Diff line
@@ -144,13 +144,13 @@ MODULE_VERSION("V 1.1"); 
MODULE_DEVICE_TABLE(usb, rtl8192_usb_id_tbl);

MODULE_DESCRIPTION("Linux driver for Realtek RTL8192 USB WiFi cards");



static char* ifname = "wlan%d";

static char ifname[IFNAMSIZ] = "wlan%d";

static int hwwep = 1;  //default use hw. set 0 to use software security

static int channels = 0x3fff;







module_param(ifname, charp, S_IRUGO|S_IWUSR );

module_param_string(ifname, ifname, sizeof(ifname), S_IRUGO|S_IWUSR);

//module_param(hwseqnum,int, S_IRUGO|S_IWUSR);

module_param(hwwep,int, S_IRUGO|S_IWUSR);

module_param(channels,int, S_IRUGO|S_IWUSR);
@@ -7406,7 +7406,7 @@ static int __devinit rtl8192_usb_probe(struct usb_interface *intf, 


	if (dev_alloc_name(dev, ifname) < 0){

                RT_TRACE(COMP_INIT, "Oops: devname already taken! Trying wlan%%d...\n");

		ifname = "wlan%d";

		strcpy(ifname, "wlan%d");

		dev_alloc_name(dev, ifname);

        }