linux-kernel - [PATCH 01/10] lightnvm: pblk: fix bad le64 assignations

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Date:   Fri, 30 Jun 2017 17:56:34 +0200
From:   "Javier González" <jg@...htnvm.io>
To:     mb@...htnvm.io, axboe@...com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        Javier González <javier@...xlabs.com>,
        Matias Bjørling <matias@...xlabs.com>
Subject: [PATCH 01/10] lightnvm: pblk: fix bad le64 assignations

Use the right types and conversions on le64 variables. Reported by
sparse.

Signed-off-by: Javier González <javier@...xlabs.com>
Signed-off-by: Matias Bjørling <matias@...xlabs.com>
---
 drivers/lightnvm/pblk-core.c     | 2 +-
 drivers/lightnvm/pblk-gc.c       | 5 ++++-
 drivers/lightnvm/pblk-map.c      | 2 +-
 drivers/lightnvm/pblk-recovery.c | 2 +-
 4 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c
index 7648186bd1b1..a654b34f6f86 100644
--- a/drivers/lightnvm/pblk-core.c
+++ b/drivers/lightnvm/pblk-core.c
@@ -765,7 +765,7 @@ static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line,
 		rqd.ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
 
 		if (dir == WRITE) {
-			u64 addr_empty = cpu_to_le64(ADDR_EMPTY);
+			__le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
 
 			meta_list[i].lba = lba_list[paddr] = addr_empty;
 		}
diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c
index 1d289242ab92..9b4059b93855 100644
--- a/drivers/lightnvm/pblk-gc.c
+++ b/drivers/lightnvm/pblk-gc.c
@@ -314,10 +314,13 @@ static struct pblk_line *pblk_gc_get_victim_line(struct pblk *pblk,
 						 struct list_head *group_list)
 {
 	struct pblk_line *line, *victim;
+	int line_vsc, victim_vsc;
 
 	victim = list_first_entry(group_list, struct pblk_line, list);
 	list_for_each_entry(line, group_list, list) {
-		if (*line->vsc < *victim->vsc)
+		line_vsc = le32_to_cpu(*line->vsc);
+		victim_vsc = le32_to_cpu(*victim->vsc);
+		if (line_vsc < victim_vsc)
 			victim = line;
 	}
 
diff --git a/drivers/lightnvm/pblk-map.c b/drivers/lightnvm/pblk-map.c
index a9be03cd07a8..fddb924f6dde 100644
--- a/drivers/lightnvm/pblk-map.c
+++ b/drivers/lightnvm/pblk-map.c
@@ -53,7 +53,7 @@ static void pblk_map_page_data(struct pblk *pblk, unsigned int sentry,
 			lba_list[paddr] = cpu_to_le64(w_ctx->lba);
 			line->nr_valid_lbas++;
 		} else {
-			u64 addr_empty = cpu_to_le64(ADDR_EMPTY);
+			__le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
 
 			lba_list[paddr] = meta_list[i].lba = addr_empty;
 			__pblk_map_invalidate(pblk, line, paddr);
diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c
index abf36f587477..7e1c314f2766 100644
--- a/drivers/lightnvm/pblk-recovery.c
+++ b/drivers/lightnvm/pblk-recovery.c
@@ -395,7 +395,7 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line,
 
 		for (j = 0; j < pblk->min_write_pgs; j++, i++, w_ptr++) {
 			struct ppa_addr dev_ppa;
-			u64 addr_empty = cpu_to_le64(ADDR_EMPTY);
+			__le64 addr_empty = cpu_to_le64(ADDR_EMPTY);
 
 			dev_ppa = addr_to_gen_ppa(pblk, w_ptr, line->id);
 
-- 
2.7.4