| 
									
										
										
										
											2012-05-10 12:14:08 +03:00
										 |  |  | /*
 | 
					
						
							|  |  |  |  * This file is part of wl12xx | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * Copyright (C) 2009 Nokia Corporation | 
					
						
							|  |  |  |  * Copyright (C) 2011-2012 Texas Instruments | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * This program is free software; you can redistribute it and/or | 
					
						
							|  |  |  |  * modify it under the terms of the GNU General Public License | 
					
						
							|  |  |  |  * version 2 as published by the Free Software Foundation. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * This program is distributed in the hope that it will be useful, but | 
					
						
							|  |  |  |  * WITHOUT ANY WARRANTY; without even the implied warranty of | 
					
						
							|  |  |  |  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
					
						
							|  |  |  |  * General Public License for more details. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * You should have received a copy of the GNU General Public License | 
					
						
							|  |  |  |  * along with this program; if not, write to the Free Software | 
					
						
							|  |  |  |  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | 
					
						
							|  |  |  |  * 02110-1301 USA | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #include "../wlcore/debugfs.h"
 | 
					
						
							|  |  |  | #include "../wlcore/wlcore.h"
 | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | #include "wl12xx.h"
 | 
					
						
							|  |  |  | #include "acx.h"
 | 
					
						
							| 
									
										
										
										
											2012-05-10 12:14:09 +03:00
										 |  |  | #include "debugfs.h"
 | 
					
						
							| 
									
										
										
										
											2012-05-10 12:14:08 +03:00
										 |  |  | 
 | 
					
						
							|  |  |  | #define WL12XX_DEBUGFS_FWSTATS_FILE(a, b, c) \
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_FILE(a, b, c, wl12xx_acx_statistics) | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(tx, internal_desc_overflow, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rx, out_of_mem, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rx, hdr_overflow, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rx, hw_stuck, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rx, dropped, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rx, fcs_err, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rx, xfr_hint_trig, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rx, path_reset, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rx, reset_counter, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(dma, rx_requested, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(dma, rx_errors, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(dma, tx_requested, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(dma, tx_errors, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, cmd_cmplt, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, fiqs, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, rx_headers, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, rx_mem_overflow, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, rx_rdys, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, irqs, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, tx_procs, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, decrypt_done, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, dma0_done, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, dma1_done, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, tx_exch_complete, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, commands, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, rx_procs, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, hw_pm_mode_changes, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, host_acknowledges, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, pci_pm, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, wakeups, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(isr, low_rssi, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(wep, addr_key_count, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(wep, default_key_count, "%u"); | 
					
						
							|  |  |  | /* skipping wep.reserved */ | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(wep, key_not_found, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(wep, decrypt_fail, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(wep, packets, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(wep, interrupt, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, ps_enter, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, elp_enter, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, missing_bcns, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, wake_on_host, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, wake_on_timer_exp, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, tx_with_ps, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, tx_without_ps, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, rcvd_beacons, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, power_save_off, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, enable_ps, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, disable_ps, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, fix_tsf_ps, "%u"); | 
					
						
							|  |  |  | /* skipping cont_miss_bcns_spread for now */ | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(pwr, rcvd_awake_beacons, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(mic, rx_pkts, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(mic, calc_failure, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(aes, encrypt_fail, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(aes, decrypt_fail, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(aes, encrypt_packets, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(aes, decrypt_packets, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(aes, encrypt_interrupt, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(aes, decrypt_interrupt, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(event, heart_beat, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(event, calibration, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(event, rx_mismatch, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(event, rx_mem_empty, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(event, rx_pool, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(event, oom_late, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(event, phy_transmit_error, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(event, tx_stuck, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(ps, pspoll_timeouts, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(ps, upsd_timeouts, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(ps, upsd_max_sptime, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(ps, upsd_max_apturn, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(ps, pspoll_max_apturn, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(ps, pspoll_utilization, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(ps, upsd_utilization, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rxpipe, rx_prep_beacon_drop, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rxpipe, descr_host_int_trig_rx_data, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rxpipe, beacon_buffer_thres_host_int_trig_rx_data, | 
					
						
							|  |  |  | 			    "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rxpipe, missed_beacon_host_int_trig_rx_data, "%u"); | 
					
						
							|  |  |  | WL12XX_DEBUGFS_FWSTATS_FILE(rxpipe, tx_xfr_host_int_trig_rx_data, "%u"); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | int wl12xx_debugfs_add_files(struct wl1271 *wl, | 
					
						
							|  |  |  | 			     struct dentry *rootdir) | 
					
						
							|  |  |  | { | 
					
						
							|  |  |  | 	int ret = 0; | 
					
						
							| 
									
										
										
										
											2012-05-10 12:14:19 +03:00
										 |  |  | 	struct dentry *entry, *stats, *moddir; | 
					
						
							| 
									
										
										
										
											2012-05-10 12:14:08 +03:00
										 |  |  | 
 | 
					
						
							| 
									
										
										
										
											2012-05-10 12:14:19 +03:00
										 |  |  | 	moddir = debugfs_create_dir(KBUILD_MODNAME, rootdir); | 
					
						
							|  |  |  | 	if (!moddir || IS_ERR(moddir)) { | 
					
						
							|  |  |  | 		entry = moddir; | 
					
						
							|  |  |  | 		goto err; | 
					
						
							|  |  |  | 	} | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	stats = debugfs_create_dir("fw_stats", moddir); | 
					
						
							| 
									
										
										
										
											2012-05-10 12:14:08 +03:00
										 |  |  | 	if (!stats || IS_ERR(stats)) { | 
					
						
							|  |  |  | 		entry = stats; | 
					
						
							|  |  |  | 		goto err; | 
					
						
							|  |  |  | 	} | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(tx, internal_desc_overflow); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rx, out_of_mem); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rx, hdr_overflow); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rx, hw_stuck); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rx, dropped); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rx, fcs_err); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rx, xfr_hint_trig); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rx, path_reset); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rx, reset_counter); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(dma, rx_requested); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(dma, rx_errors); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(dma, tx_requested); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(dma, tx_errors); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, cmd_cmplt); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, fiqs); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, rx_headers); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, rx_mem_overflow); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, rx_rdys); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, irqs); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, tx_procs); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, decrypt_done); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, dma0_done); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, dma1_done); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, tx_exch_complete); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, commands); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, rx_procs); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, hw_pm_mode_changes); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, host_acknowledges); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, pci_pm); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, wakeups); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(isr, low_rssi); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(wep, addr_key_count); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(wep, default_key_count); | 
					
						
							|  |  |  | 	/* skipping wep.reserved */ | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(wep, key_not_found); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(wep, decrypt_fail); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(wep, packets); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(wep, interrupt); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, ps_enter); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, elp_enter); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, missing_bcns); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, wake_on_host); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, wake_on_timer_exp); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, tx_with_ps); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, tx_without_ps); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, rcvd_beacons); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, power_save_off); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, enable_ps); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, disable_ps); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, fix_tsf_ps); | 
					
						
							|  |  |  | 	/* skipping cont_miss_bcns_spread for now */ | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(pwr, rcvd_awake_beacons); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(mic, rx_pkts); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(mic, calc_failure); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(aes, encrypt_fail); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(aes, decrypt_fail); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(aes, encrypt_packets); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(aes, decrypt_packets); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(aes, encrypt_interrupt); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(aes, decrypt_interrupt); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(event, heart_beat); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(event, calibration); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(event, rx_mismatch); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(event, rx_mem_empty); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(event, rx_pool); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(event, oom_late); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(event, phy_transmit_error); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(event, tx_stuck); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(ps, pspoll_timeouts); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(ps, upsd_timeouts); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(ps, upsd_max_sptime); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(ps, upsd_max_apturn); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(ps, pspoll_max_apturn); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(ps, pspoll_utilization); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(ps, upsd_utilization); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rxpipe, rx_prep_beacon_drop); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rxpipe, descr_host_int_trig_rx_data); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rxpipe, beacon_buffer_thres_host_int_trig_rx_data); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rxpipe, missed_beacon_host_int_trig_rx_data); | 
					
						
							|  |  |  | 	DEBUGFS_FWSTATS_ADD(rxpipe, tx_xfr_host_int_trig_rx_data); | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	return 0; | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | err: | 
					
						
							|  |  |  | 	if (IS_ERR(entry)) | 
					
						
							|  |  |  | 		ret = PTR_ERR(entry); | 
					
						
							|  |  |  | 	else | 
					
						
							|  |  |  | 		ret = -ENOMEM; | 
					
						
							|  |  |  | 
 | 
					
						
							|  |  |  | 	return ret; | 
					
						
							|  |  |  | } |