ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries

Use the helper to get rid of the file operations per debugfs file. The
device driver data contains struct ieee80211_hw pointer and the
struct ath9k_softc pointer is assigned to ieee80211_hw::priv so it can
be accessed in the seq_file read operation.

Cc: ath9k-devel@lists.ath9k.org
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 29 insertions, 100 deletions

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index c43e2ad36587..1bed9d7589af 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -403,7 +403,8 @@ static const struct file_operations fops_antenna_diversity = {
 
 static int read_file_dma(struct seq_file *file, void *data)
 {
-        struct ath_softc *sc = file->private;
+        struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+        struct ath_softc *sc = hw->priv;
         struct ath_hw *ah = sc->sc_ah;
         u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
         int i, qcuOffset = 0, dcuOffset = 0;
@@ -470,20 +471,6 @@ static int read_file_dma(struct seq_file *file, void *data)
         return 0;
 }
 
-static int open_file_dma(struct inode *inode, struct file *f)
-{
-        return single_open(f, read_file_dma, inode->i_private);
-}
-
-static const struct file_operations fops_dma = {
-        .open = open_file_dma,
-        .read = seq_read,
-        .owner = THIS_MODULE,
-        .llseek = seq_lseek,
-        .release = single_release,
-};
-
-
 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
 {
         if (status)
@@ -539,7 +526,8 @@ void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
 
 static int read_file_interrupt(struct seq_file *file, void *data)
 {
-        struct ath_softc *sc = file->private;
+        struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+        struct ath_softc *sc = hw->priv;
 
 #define PR_IS(a, s)                                             \
         do {                                                    \
@@ -600,22 +588,10 @@ static int read_file_interrupt(struct seq_file *file, void *data)
         return 0;
 }
 
-static int open_file_interrupt(struct inode *inode, struct file *f)
-{
-        return single_open(f, read_file_interrupt, inode->i_private);
-}
-
-static const struct file_operations fops_interrupt = {
-        .read = seq_read,
-        .open = open_file_interrupt,
-        .owner = THIS_MODULE,
-        .llseek = seq_lseek,
-        .release = single_release,
-};
-
 static int read_file_xmit(struct seq_file *file, void *data)
 {
-        struct ath_softc *sc = file->private;
+        struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+        struct ath_softc *sc = hw->priv;
 
         seq_printf(file, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO");
 
@@ -661,7 +637,8 @@ static void print_queue(struct ath_softc *sc, struct ath_txq *txq,
 
 static int read_file_queues(struct seq_file *file, void *data)
 {
-        struct ath_softc *sc = file->private;
+        struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+        struct ath_softc *sc = hw->priv;
         struct ath_txq *txq;
         int i;
         static const char *qname[4] = {
@@ -682,7 +659,8 @@ static int read_file_queues(struct seq_file *file, void *data)
 
 static int read_file_misc(struct seq_file *file, void *data)
 {
-        struct ath_softc *sc = file->private;
+        struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+        struct ath_softc *sc = hw->priv;
         struct ath_common *common = ath9k_hw_common(sc->sc_ah);
         struct ath9k_vif_iter_data iter_data;
         struct ath_chanctx *ctx;
@@ -773,7 +751,8 @@ static int read_file_misc(struct seq_file *file, void *data)
 
 static int read_file_reset(struct seq_file *file, void *data)
 {
-        struct ath_softc *sc = file->private;
+        struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+        struct ath_softc *sc = hw->priv;
         static const char * const reset_cause[__RESET_TYPE_MAX] = {
                 [RESET_TYPE_BB_HANG] = "Baseband Hang",
                 [RESET_TYPE_BB_WATCHDOG] = "Baseband Watchdog",
@@ -837,58 +816,6 @@ void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
                 TX_STAT_INC(qnum, delim_underrun);
 }
 
-static int open_file_xmit(struct inode *inode, struct file *f)
-{
-        return single_open(f, read_file_xmit, inode->i_private);
-}
-
-static const struct file_operations fops_xmit = {
-        .read = seq_read,
-        .open = open_file_xmit,
-        .owner = THIS_MODULE,
-        .llseek = seq_lseek,
-        .release = single_release,
-};
-
-static int open_file_queues(struct inode *inode, struct file *f)
-{
-        return single_open(f, read_file_queues, inode->i_private);
-}
-
-static const struct file_operations fops_queues = {
-        .read = seq_read,
-        .open = open_file_queues,
-        .owner = THIS_MODULE,
-        .llseek = seq_lseek,
-        .release = single_release,
-};
-
-static int open_file_misc(struct inode *inode, struct file *f)
-{
-        return single_open(f, read_file_misc, inode->i_private);
-}
-
-static const struct file_operations fops_misc = {
-        .read = seq_read,
-        .open = open_file_misc,
-        .owner = THIS_MODULE,
-        .llseek = seq_lseek,
-        .release = single_release,
-};
-
-static int open_file_reset(struct inode *inode, struct file *f)
-{
-        return single_open(f, read_file_reset, inode->i_private);
-}
-
-static const struct file_operations fops_reset = {
-        .read = seq_read,
-        .open = open_file_reset,
-        .owner = THIS_MODULE,
-        .llseek = seq_lseek,
-        .release = single_release,
-};
-
 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
 {
         ath9k_cmn_debug_stat_rx(&sc->debug.stats.rxstats, rs);
@@ -1018,7 +945,8 @@ static const struct file_operations fops_regdump = {
 
 static int read_file_dump_nfcal(struct seq_file *file, void *data)
 {
-        struct ath_softc *sc = file->private;
+        struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+        struct ath_softc *sc = hw->priv;
         struct ath_hw *ah = sc->sc_ah;
         struct ath9k_nfcal_hist *h = sc->cur_chan->caldata.nfCalHist;
         struct ath_common *common = ath9k_hw_common(ah);
@@ -1329,14 +1257,14 @@ int ath9k_init_debug(struct ath_hw *ah)
         ath9k_tx99_init_debug(sc);
         ath9k_cmn_spectral_init_debug(&sc->spec_priv, sc->debug.debugfs_phy);
 
-        debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
-                            &fops_dma);
-        debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, sc,
-                            &fops_interrupt);
-        debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc,
-                            &fops_xmit);
-        debugfs_create_file("queues", S_IRUSR, sc->debug.debugfs_phy, sc,
-                            &fops_queues);
+        debugfs_create_devm_seqfile(sc->dev, "dma", sc->debug.debugfs_phy,
+                                    read_file_dma);
+        debugfs_create_devm_seqfile(sc->dev, "interrupt", sc->debug.debugfs_phy,
+                                    read_file_interrupt);
+        debugfs_create_devm_seqfile(sc->dev, "xmit", sc->debug.debugfs_phy,
+                                    read_file_xmit);
+        debugfs_create_devm_seqfile(sc->dev, "queues", sc->debug.debugfs_phy,
+                                    read_file_queues);
         debugfs_create_u32("qlen_bk", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
                            &sc->tx.txq_max_pending[IEEE80211_AC_BK]);
         debugfs_create_u32("qlen_be", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
@@ -1345,10 +1273,10 @@ int ath9k_init_debug(struct ath_hw *ah)
                            &sc->tx.txq_max_pending[IEEE80211_AC_VI]);
         debugfs_create_u32("qlen_vo", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
                            &sc->tx.txq_max_pending[IEEE80211_AC_VO]);
-        debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy, sc,
-                            &fops_misc);
-        debugfs_create_file("reset", S_IRUSR, sc->debug.debugfs_phy, sc,
-                            &fops_reset);
+        debugfs_create_devm_seqfile(sc->dev, "misc", sc->debug.debugfs_phy,
+                                    read_file_misc);
+        debugfs_create_devm_seqfile(sc->dev, "reset", sc->debug.debugfs_phy,
+                                    read_file_reset);
 
         ath9k_cmn_debug_recv(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
         ath9k_cmn_debug_phy_err(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
@@ -1370,8 +1298,9 @@ int ath9k_init_debug(struct ath_hw *ah)
                             &ah->config.cwm_ignore_extcca);
         debugfs_create_file("regdump", S_IRUSR, sc->debug.debugfs_phy, sc,
                             &fops_regdump);
-        debugfs_create_file("dump_nfcal", S_IRUSR, sc->debug.debugfs_phy, sc,
-                            &fops_dump_nfcal);
+        debugfs_create_devm_seqfile(sc->dev, "dump_nfcal",
+                                    sc->debug.debugfs_phy,
+                                    read_file_dump_nfcal);
 
         ath9k_cmn_debug_base_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
         ath9k_cmn_debug_modal_eeprom(sc->debug.debugfs_phy, sc->sc_ah);