linux-kernel - [PATCH 7/8] parisc/lba_pci: use container_of in LBA

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Message-Id: <20190129181310.5557-8-hch@lst.de>
Date:   Tue, 29 Jan 2019 19:13:09 +0100
From:   Christoph Hellwig <hch@....de>
To:     "James E.J. Bottomley" <jejb@...isc-linux.org>,
        Helge Deller <deller@....de>
Cc:     linux-parisc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 7/8] parisc/lba_pci: use container_of in LBA_DEV

Use the type safe container_of macros instead of a blind cast in
LBA_DEV, and turn the macro into an inline function.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/parisc/lba_pci.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index 63e9bc6d18de..065d88868402 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -111,12 +111,10 @@ static u32 lba_t32;
 
 #define LBA_SKIP_PROBE(d) ((d)->flags & LBA_FLAG_SKIP_PROBE)
 
-
-/* Looks nice and keeps the compiler happy */
-#define LBA_DEV(d) ({				\
-	void *__pdata = d;			\
-	BUG_ON(!__pdata);			\
-	(struct lba_device *)__pdata; })
+static inline struct lba_device *LBA_DEV(struct pci_hba_data *hba)
+{
+	return container_of(hba, struct lba_device, hba);
+}
 
 /*
 ** Only allow 8 subsidiary busses per LBA
-- 
2.20.1