summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorBart Van Assche <bvanassche@acm.org>2020-03-13 13:31:00 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2020-03-16 22:08:34 -0400
commita7afff31d56db22647251d76d6af030cd47bd97e (patch)
tree7a42b6b8e15f957ba640a476b53fb6ccba2854f8
parent7251c0a41053631ac66795e7f7ddf4d4cba1f467 (diff)
scsi: treewide: Consolidate {get,put}_unaligned_[bl]e24() definitions
Move the get_unaligned_be24(), get_unaligned_le24() and put_unaligned_le24() definitions from various drivers into include/linux/unaligned/generic.h. Add a put_unaligned_be24() implementation. Link: https://lore.kernel.org/r/20200313203102.16613-4-bvanassche@acm.org Cc: Keith Busch <kbusch@kernel.org> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Jens Axboe <axboe@fb.com> Cc: Harvey Harrison <harvey.harrison@gmail.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> # For drivers/usb Reviewed-by: Felipe Balbi <balbi@kernel.org> # For drivers/usb/gadget Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
-rw-r--r--drivers/nvme/host/rdma.c8
-rw-r--r--drivers/nvme/target/rdma.c6
-rw-r--r--drivers/usb/gadget/function/f_mass_storage.c1
-rw-r--r--drivers/usb/gadget/function/storage_common.h5
-rw-r--r--include/linux/unaligned/generic.h46
-rw-r--r--include/target/target_core_backend.h6
6 files changed, 47 insertions, 25 deletions
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 2a47c6c5007e..85e9bcbd44b4 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -142,14 +142,6 @@ static void nvme_rdma_recv_done(struct ib_cq *cq, struct ib_wc *wc);
static const struct blk_mq_ops nvme_rdma_mq_ops;
static const struct blk_mq_ops nvme_rdma_admin_mq_ops;
-/* XXX: really should move to a generic header sooner or later.. */
-static inline void put_unaligned_le24(u32 val, u8 *p)
-{
- *p++ = val;
- *p++ = val >> 8;
- *p++ = val >> 16;
-}
-
static inline int nvme_rdma_queue_idx(struct nvme_rdma_queue *queue)
{
return queue - queue->ctrl->queues;
diff --git a/drivers/nvme/target/rdma.c b/drivers/nvme/target/rdma.c
index 37d262a65877..8fcede75e02a 100644
--- a/drivers/nvme/target/rdma.c
+++ b/drivers/nvme/target/rdma.c
@@ -143,12 +143,6 @@ static int num_pages(int len)
return 1 + (((len - 1) & PAGE_MASK) >> PAGE_SHIFT);
}
-/* XXX: really should move to a generic header sooner or later.. */
-static inline u32 get_unaligned_le24(const u8 *p)
-{
- return (u32)p[0] | (u32)p[1] << 8 | (u32)p[2] << 16;
-}
-
static inline bool nvmet_rdma_need_data_in(struct nvmet_rdma_rsp *rsp)
{
return nvme_is_write(rsp->req.cmd) &&
diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c
index 7c96c4665178..950d2a85f098 100644
--- a/drivers/usb/gadget/function/f_mass_storage.c
+++ b/drivers/usb/gadget/function/f_mass_storage.c
@@ -216,6 +216,7 @@
#include <linux/freezer.h>
#include <linux/module.h>
#include <linux/uaccess.h>
+#include <asm/unaligned.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
diff --git a/drivers/usb/gadget/function/storage_common.h b/drivers/usb/gadget/function/storage_common.h
index e5e3a2553aaa..bdeb1e233fc9 100644
--- a/drivers/usb/gadget/function/storage_common.h
+++ b/drivers/usb/gadget/function/storage_common.h
@@ -172,11 +172,6 @@ enum data_direction {
DATA_DIR_NONE
};
-static inline u32 get_unaligned_be24(u8 *buf)
-{
- return 0xffffff & (u32) get_unaligned_be32(buf - 1);
-}
-
static inline struct fsg_lun *fsg_lun_from_dev(struct device *dev)
{
return container_of(dev, struct fsg_lun, dev);
diff --git a/include/linux/unaligned/generic.h b/include/linux/unaligned/generic.h
index 57d3114656e5..303289492859 100644
--- a/include/linux/unaligned/generic.h
+++ b/include/linux/unaligned/generic.h
@@ -2,6 +2,8 @@
#ifndef _LINUX_UNALIGNED_GENERIC_H
#define _LINUX_UNALIGNED_GENERIC_H
+#include <linux/types.h>
+
/*
* Cause a link-time error if we try an unaligned access other than
* 1,2,4 or 8 bytes long
@@ -66,4 +68,48 @@ extern void __bad_unaligned_access_size(void);
} \
(void)0; })
+static inline u32 __get_unaligned_be24(const u8 *p)
+{
+ return p[0] << 16 | p[1] << 8 | p[2];
+}
+
+static inline u32 get_unaligned_be24(const void *p)
+{
+ return __get_unaligned_be24(p);
+}
+
+static inline u32 __get_unaligned_le24(const u8 *p)
+{
+ return p[0] | p[1] << 8 | p[2] << 16;
+}
+
+static inline u32 get_unaligned_le24(const void *p)
+{
+ return __get_unaligned_le24(p);
+}
+
+static inline void __put_unaligned_be24(const u32 val, u8 *p)
+{
+ *p++ = val >> 16;
+ *p++ = val >> 8;
+ *p++ = val;
+}
+
+static inline void put_unaligned_be24(const u32 val, void *p)
+{
+ __put_unaligned_be24(val, p);
+}
+
+static inline void __put_unaligned_le24(const u32 val, u8 *p)
+{
+ *p++ = val;
+ *p++ = val >> 8;
+ *p++ = val >> 16;
+}
+
+static inline void put_unaligned_le24(const u32 val, void *p)
+{
+ __put_unaligned_le24(val, p);
+}
+
#endif /* _LINUX_UNALIGNED_GENERIC_H */
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index 51b6f50eabee..1b752d8ea529 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -116,10 +116,4 @@ static inline bool target_dev_configured(struct se_device *se_dev)
return !!(se_dev->dev_flags & DF_CONFIGURED);
}
-/* Only use get_unaligned_be24() if reading p - 1 is allowed. */
-static inline uint32_t get_unaligned_be24(const uint8_t *const p)
-{
- return get_unaligned_be32(p - 1) & 0xffffffU;
-}
-
#endif /* TARGET_CORE_BACKEND_H */