[PATCH v2 3/6] ath10k: detach coredump.c from debug.c

[Kalle Valo <kvalo@qca.qualcomm.com>]

Now coredump is totally separate from debug.c and doesn't depend on
CONFIG_ATH10K_DEBUGFS anymore, only on CONFIG_DEV_COREDUMP. Also remove
leftovers from the removed debugfs file support.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
---
 drivers/net/wireless/ath/ath10k/Makefile   |    2 +
 drivers/net/wireless/ath/ath10k/core.c     |   10 +++++
 drivers/net/wireless/ath/ath10k/core.h     |   11 ++++--
 drivers/net/wireless/ath/ath10k/coredump.c |   51 +++++++++-------------------
 drivers/net/wireless/ath/ath10k/coredump.h |   11 ++++++
 drivers/net/wireless/ath/ath10k/debug.c    |    7 ----
 6 files changed, 45 insertions(+), 47 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/Makefile b/drivers/net/wireless/ath/ath10k/Makefile
index 4e6a396827ee..6739ac26fd29 100644
--- a/drivers/net/wireless/ath/ath10k/Makefile
+++ b/drivers/net/wireless/ath/ath10k/Makefile
@@ -21,7 +21,7 @@ ath10k_core-$(CONFIG_ATH10K_TRACING) += trace.o
 ath10k_core-$(CONFIG_THERMAL) += thermal.o
 ath10k_core-$(CONFIG_MAC80211_DEBUGFS) += debugfs_sta.o
 ath10k_core-$(CONFIG_PM) += wow.o
-ath10k_core-$(CONFIG_ATH10K_DEBUGFS) += coredump.o
+ath10k_core-$(CONFIG_DEV_COREDUMP) += coredump.o
 
 obj-$(CONFIG_ATH10K_PCI) += ath10k_pci.o
 ath10k_pci-y += pci.o \
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 8d36bfcfcf01..c42e74e03ba5 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -2676,12 +2676,19 @@ struct ath10k *ath10k_core_create(size_t priv_size, struct device *dev,
 
 	init_dummy_netdev(&ar->napi_dev);
 
-	ret = ath10k_debug_create(ar);
+	ret = ath10k_coredump_create(ar);
 	if (ret)
 		goto err_free_aux_wq;
 
+	ret = ath10k_debug_create(ar);
+	if (ret)
+		goto err_free_coredump;
+
 	return ar;
 
+err_free_coredump:
+	ath10k_coredump_destroy(ar);
+
 err_free_aux_wq:
 	destroy_workqueue(ar->workqueue_aux);
 err_free_wq:
@@ -2703,6 +2710,7 @@ void ath10k_core_destroy(struct ath10k *ar)
 	destroy_workqueue(ar->workqueue_aux);
 
 	ath10k_debug_destroy(ar);
+	ath10k_coredump_destroy(ar);
 	ath10k_htt_tx_destroy(&ar->htt);
 	ath10k_wmi_free_host_mem(ar);
 	ath10k_mac_destroy(ar);
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index 398cd3c57139..5e7705f59962 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -458,8 +458,6 @@ struct ath10k_ce_crash_hdr {
 
 /* used for crash-dump storage, protected by data-lock */
 struct ath10k_fw_crash_data {
-	bool crashed_since_read;
-
 	guid_t guid;
 	struct timespec64 timestamp;
 	__le32 registers[REG_DUMP_COUNT_QCA988X];
@@ -489,8 +487,6 @@ struct ath10k_debug {
 	u32 reg_addr;
 	u32 nf_cal_period;
 	void *cal_data;
-
-	struct ath10k_fw_crash_data *fw_crash_data;
 };
 
 enum ath10k_state {
@@ -961,6 +957,13 @@ struct ath10k {
 #endif
 
 	u32 pktlog_filter;
+
+#ifdef CONFIG_DEV_COREDUMP
+	struct {
+		struct ath10k_fw_crash_data *fw_crash_data;
+	} coredump;
+#endif
+
 	struct {
 		/* protected by conf_mutex */
 		struct ath10k_fw_components utf_mode_fw;
diff --git a/drivers/net/wireless/ath/ath10k/coredump.c b/drivers/net/wireless/ath/ath10k/coredump.c
index 51b86878e733..968ab2f74d83 100644
--- a/drivers/net/wireless/ath/ath10k/coredump.c
+++ b/drivers/net/wireless/ath/ath10k/coredump.c
@@ -21,15 +21,12 @@
 
 #include "debug.h"
 
-#ifdef CONFIG_DEV_COREDUMP
-
 struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar)
 {
-	struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
+	struct ath10k_fw_crash_data *crash_data = ar->coredump.fw_crash_data;
 
 	lockdep_assert_held(&ar->data_lock);
 
-	crash_data->crashed_since_read = true;
 	guid_gen(&crash_data->guid);
 	ktime_get_real_ts64(&crash_data->timestamp);
 
@@ -37,10 +34,9 @@ struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar)
 }
 EXPORT_SYMBOL(ath10k_coredump_new);
 
-static struct ath10k_dump_file_data *ath10k_coredump_build(struct ath10k *ar,
-							   bool mark_read)
+static struct ath10k_dump_file_data *ath10k_coredump_build(struct ath10k *ar)
 {
-	struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
+	struct ath10k_fw_crash_data *crash_data = ar->coredump.fw_crash_data;
 	struct ath10k_ce_crash_hdr *ce_hdr;
 	struct ath10k_dump_file_data *dump_data;
 	struct ath10k_tlv_dump_data *dump_tlv;
@@ -64,12 +60,6 @@ static struct ath10k_dump_file_data *ath10k_coredump_build(struct ath10k *ar,
 
 	spin_lock_bh(&ar->data_lock);
 
-	if (!crash_data->crashed_since_read) {
-		spin_unlock_bh(&ar->data_lock);
-		vfree(buf);
-		return NULL;
-	}
-
 	dump_data = (struct ath10k_dump_file_data *)(buf);
 	strlcpy(dump_data->df_magic, "ATH10K-FW-DUMP",
 		sizeof(dump_data->df_magic));
@@ -122,8 +112,6 @@ static struct ath10k_dump_file_data *ath10k_coredump_build(struct ath10k *ar,
 	sofar += sizeof(*dump_tlv) + sizeof(*ce_hdr) +
 		 CE_COUNT * sizeof(ce_hdr->entries[0]);
 
-	ar->debug.fw_crash_data->crashed_since_read = !mark_read;
-
 	spin_unlock_bh(&ar->data_lock);
 
 	return dump_data;
@@ -132,34 +120,29 @@ static struct ath10k_dump_file_data *ath10k_coredump_build(struct ath10k *ar,
 int ath10k_coredump_submit(struct ath10k *ar)
 {
 	struct ath10k_dump_file_data *dump;
-	void *dump_ptr;
-	u32 dump_len;
 
-	/* To keep the dump file available also for debugfs don't mark the
-	 * file read, only debugfs should do that.
-	 */
-	dump = ath10k_coredump_build(ar, false);
+	dump = ath10k_coredump_build(ar);
 	if (!dump) {
 		ath10k_warn(ar, "no crash dump data found for devcoredump");
 		return -ENODATA;
 	}
 
-	/* Make a copy of the dump file for dev_coredumpv() as during the
-	 * transition period we need to own the original file. Once
-	 * fw_crash_dump debugfs file is removed no need to have a copy
-	 * anymore.
-	 */
-	dump_len = le32_to_cpu(dump->len);
-	dump_ptr = vzalloc(dump_len);
+	dev_coredumpv(ar->dev, dump, le32_to_cpu(dump->len), GFP_KERNEL);
 
-	if (!dump_ptr)
-		return -ENOMEM;
-
-	memcpy(dump_ptr, dump, dump_len);
+	return 0;
+}
 
-	dev_coredumpv(ar->dev, dump_ptr, dump_len, GFP_KERNEL);
+int ath10k_coredump_create(struct ath10k *ar)
+{
+	ar->coredump.fw_crash_data = vzalloc(sizeof(*ar->coredump.fw_crash_data));
+	if (!ar->coredump.fw_crash_data)
+		return -ENOMEM;
 
 	return 0;
 }
 
-#endif /* CONFIG_DEV_COREDUMP */
+void ath10k_coredump_destroy(struct ath10k *ar)
+{
+	vfree(ar->coredump.fw_crash_data);
+	ar->coredump.fw_crash_data = NULL;
+}
diff --git a/drivers/net/wireless/ath/ath10k/coredump.h b/drivers/net/wireless/ath/ath10k/coredump.h
index 2d2f45b5aa37..2d33075f081a 100644
--- a/drivers/net/wireless/ath/ath10k/coredump.h
+++ b/drivers/net/wireless/ath/ath10k/coredump.h
@@ -103,6 +103,8 @@ struct ath10k_dump_file_data {
 
 int ath10k_coredump_submit(struct ath10k *ar);
 struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar);
+int ath10k_coredump_create(struct ath10k *ar);
+void ath10k_coredump_destroy(struct ath10k *ar);
 
 #else /* CONFIG_DEV_COREDUMP */
 
@@ -116,6 +118,15 @@ static inline struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar
 	return NULL;
 }
 
+static inline int ath10k_coredump_create(struct ath10k *ar)
+{
+	return 0;
+}
+
+static inline void ath10k_coredump_destroy(struct ath10k *ar)
+{
+}
+
 #endif /* CONFIG_DEV_COREDUMP */
 
 #endif /* _COREDUMP_H_ */
diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index f8e44882439a..48788c851217 100644
--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -2137,10 +2137,6 @@ static const struct file_operations fops_fw_checksums = {
 
 int ath10k_debug_create(struct ath10k *ar)
 {
-	ar->debug.fw_crash_data = vzalloc(sizeof(*ar->debug.fw_crash_data));
-	if (!ar->debug.fw_crash_data)
-		return -ENOMEM;
-
 	ar->debug.cal_data = vzalloc(ATH10K_DEBUG_CAL_DATA_LEN);
 	if (!ar->debug.cal_data)
 		return -ENOMEM;
@@ -2155,9 +2151,6 @@ int ath10k_debug_create(struct ath10k *ar)
 
 void ath10k_debug_destroy(struct ath10k *ar)
 {
-	vfree(ar->debug.fw_crash_data);
-	ar->debug.fw_crash_data = NULL;
-
 	vfree(ar->debug.cal_data);
 	ar->debug.cal_data = NULL;