diff options
Diffstat (limited to 'nuttx/fs/fat/fs_fat32.c')
| -rw-r--r-- | nuttx/fs/fat/fs_fat32.c | 27 |
1 files changed, 6 insertions, 21 deletions
diff --git a/nuttx/fs/fat/fs_fat32.c b/nuttx/fs/fat/fs_fat32.c index c7157b091..4dfda324f 100644 --- a/nuttx/fs/fat/fs_fat32.c +++ b/nuttx/fs/fat/fs_fat32.c @@ -630,7 +630,6 @@ static ssize_t fat_write(FAR struct file *filep, const char *buffer, int32_t cluster; unsigned int byteswritten; unsigned int writesize; - unsigned int bufsize; unsigned int nsectors; uint8_t *userbuffer = (uint8_t*)buffer; int sectorindex; @@ -788,8 +787,8 @@ static ssize_t fat_write(FAR struct file *filep, const char *buffer, /* Copy the partial sector from the user buffer */ - bufsize = fs->fs_hwsectorsize - sectorindex; - if (bufsize > buflen) + writesize = fs->fs_hwsectorsize - sectorindex; + if (writesize > buflen) { /* We will not write to the end of the buffer. Set * write size to the size of the user buffer. @@ -799,12 +798,12 @@ static ssize_t fat_write(FAR struct file *filep, const char *buffer, } else { - /* We will write to the end of the cached sector and - * perhaps beyond. Set writesize to the number of - * bytes still available in the cached sector. + /* We will write to the end of the buffer (or beyond). Bump + * up the current sector number (actually the next sector number). */ - writesize = bufsize; + ff->ff_sectorsincluster--; + ff->ff_currentsector++; } /* Copy the data into the cached sector and make sure that the @@ -813,20 +812,6 @@ static ssize_t fat_write(FAR struct file *filep, const char *buffer, memcpy(&ff->ff_buffer[sectorindex], userbuffer, writesize); ff->ff_bflags |= (FFBUFF_DIRTY|FFBUFF_VALID|FFBUFF_MODIFIED); - - /* Do we need to write more in the next sector? We may need - * to this if we wrote to the end of the cached sector. - */ - - if (writesize >= bufsize) - { - /* We will write to the end of the buffer (or beyond). Bump - * up the current sector number. - */ - - ff->ff_sectorsincluster--; - ff->ff_currentsector++; - } } /* Set up for the next write */ |