1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
From a99477d72b500b48cb3614aad0ce096fe4e3f437 Mon Sep 17 00:00:00 2001
From: Michal Suchanek <hramrach@gmail.com>
Date: Wed, 2 Dec 2015 10:38:20 +0000
Subject: [PATCH 094/113] mtd: spi-nor: stop passing around retlen
[context adjustment]
not apply changes of drivers/mtd/devices/m25p80.c
#################
@@ -74,7 +74,7 @@ static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
}
static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
- size_t *retlen, const u_char *buf)
+ const u_char *buf)
{
struct m25p *flash = nor->priv;
struct spi_device *spi = flash->spi;
@@ -106,7 +106,6 @@ static ssize_t m25p80_write(struct spi_nor *nor, loff_t to, size_t len,
ret = m.actual_length - cmd_sz;
if (ret < 0)
return -EIO;
- *retlen += ret;
return ret;
}
@@ -127,7 +126,7 @@ static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor)
* may be any size provided it is within the physical boundaries.
*/
static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
+ u_char *buf)
{
struct m25p *flash = nor->priv;
struct spi_device *spi = flash->spi;
@@ -161,7 +160,6 @@ static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
ret = m.actual_length - m25p_cmdsz(nor) - dummy;
if (ret < 0)
return -EIO;
- *retlen += ret;
return ret;
}
#################
Do not pass retlen to hardware driver read/write functions. Update it in
spi-nor generic driver instead.
Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@freescale.com>
Integrated-by: Jiang Yutang <yutang.jiang@nxp.com>
---
drivers/mtd/spi-nor/fsl-quadspi.c | 16 ++++++----------
drivers/mtd/spi-nor/spi-nor.c | 21 +++++++++++++--------
include/linux/mtd/spi-nor.h | 4 ++--
3 files changed, 21 insertions(+), 20 deletions(-)
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -620,7 +620,7 @@ static inline void fsl_qspi_invalid(stru
static ssize_t fsl_qspi_nor_write(struct fsl_qspi *q, struct spi_nor *nor,
u8 opcode, unsigned int to, u32 *txbuf,
- unsigned count, size_t *retlen)
+ unsigned count)
{
int ret, i, j;
u32 tmp;
@@ -647,11 +647,8 @@ static ssize_t fsl_qspi_nor_write(struct
/* Trigger it */
ret = fsl_qspi_runcmd(q, opcode, to, count);
- if (ret == 0) {
- if (retlen)
- *retlen += count;
+ if (ret == 0)
return count;
- }
return ret;
}
@@ -862,7 +859,7 @@ static int fsl_qspi_write_reg(struct spi
} else if (len > 0) {
ret = fsl_qspi_nor_write(q, nor, opcode, 0,
- (u32 *)buf, len, NULL);
+ (u32 *)buf, len);
if (ret > 0)
return 0;
} else {
@@ -874,12 +871,11 @@ static int fsl_qspi_write_reg(struct spi
}
static ssize_t fsl_qspi_write(struct spi_nor *nor, loff_t to,
- size_t len, size_t *retlen, const u_char *buf)
+ size_t len, const u_char *buf)
{
struct fsl_qspi *q = nor->priv;
-
ssize_t ret = fsl_qspi_nor_write(q, nor, nor->program_opcode, to,
- (u32 *)buf, len, retlen);
+ (u32 *)buf, len);
/* invalid the data in the AHB buffer. */
fsl_qspi_invalid(q);
@@ -887,7 +883,7 @@ static ssize_t fsl_qspi_write(struct spi
}
static ssize_t fsl_qspi_read(struct spi_nor *nor, loff_t from,
- size_t len, size_t *retlen, u_char *buf)
+ size_t len, u_char *buf)
{
struct fsl_qspi *q = nor->priv;
u8 cmd = nor->read_opcode;
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -920,12 +920,13 @@ static int spi_nor_read(struct mtd_info
if (ret)
return ret;
- ret = nor->read(nor, from, len, retlen, buf);
+ ret = nor->read(nor, from, len, buf);
spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_READ);
if (ret < 0)
return ret;
+ *retlen += ret;
return 0;
}
@@ -952,7 +953,7 @@ static int sst_write(struct mtd_info *mt
nor->program_opcode = SPINOR_OP_BP;
/* write one byte. */
- ret = nor->write(nor, to, 1, retlen, buf);
+ ret = nor->write(nor, to, 1, buf);
if (ret < 0)
goto sst_write_err;
WARN(ret != 1, "While writing 1 byte written %i bytes\n",
@@ -968,7 +969,7 @@ static int sst_write(struct mtd_info *mt
nor->program_opcode = SPINOR_OP_AAI_WP;
/* write two bytes. */
- ret = nor->write(nor, to, 2, retlen, buf + actual);
+ ret = nor->write(nor, to, 2, buf + actual);
if (ret < 0)
goto sst_write_err;
WARN(ret != 2, "While writing 2 bytes written %i bytes\n",
@@ -991,7 +992,7 @@ static int sst_write(struct mtd_info *mt
write_enable(nor);
nor->program_opcode = SPINOR_OP_BP;
- ret = nor->write(nor, to, 1, retlen, buf + actual);
+ ret = nor->write(nor, to, 1, buf + actual);
if (ret < 0)
goto sst_write_err;
WARN(ret != 1, "While writing 1 byte written %i bytes\n",
@@ -1000,8 +1001,10 @@ static int sst_write(struct mtd_info *mt
if (ret)
goto sst_write_err;
write_disable(nor);
+ actual += 1;
}
sst_write_err:
+ *retlen += actual;
spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE);
return ret;
}
@@ -1030,15 +1033,17 @@ static int spi_nor_write(struct mtd_info
/* do all the bytes fit onto one page? */
if (page_offset + len <= nor->page_size) {
- ret = nor->write(nor, to, len, retlen, buf);
+ ret = nor->write(nor, to, len, buf);
if (ret < 0)
goto write_err;
+ *retlen += ret;
} else {
/* the size of data remaining on the first page */
page_size = nor->page_size - page_offset;
- ret = nor->write(nor, to, page_size, retlen, buf);
+ ret = nor->write(nor, to, page_size, buf);
if (ret < 0)
goto write_err;
+ *retlen += ret;
/* write everything in nor->page_size chunks */
for (i = ret; i < len; ) {
@@ -1052,10 +1057,10 @@ static int spi_nor_write(struct mtd_info
write_enable(nor);
- ret = nor->write(nor, to + i, page_size, retlen,
- buf + i);
+ ret = nor->write(nor, to + i, page_size, buf + i);
if (ret < 0)
goto write_err;
+ *retlen += ret;
i += ret;
}
}
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -171,9 +171,9 @@ struct spi_nor {
int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len);
ssize_t (*read)(struct spi_nor *nor, loff_t from,
- size_t len, size_t *retlen, u_char *read_buf);
+ size_t len, u_char *read_buf);
ssize_t (*write)(struct spi_nor *nor, loff_t to,
- size_t len, size_t *retlen, const u_char *write_buf);
+ size_t len, const u_char *write_buf);
int (*erase)(struct spi_nor *nor, loff_t offs);
int (*flash_lock)(struct spi_nor *nor, loff_t ofs, uint64_t len);
|
