diff options
| author | Jörg Frings-Fürst <debian@jff.email> | 2025-06-09 14:27:29 +0200 |
|---|---|---|
| committer | Jörg Frings-Fürst <debian@jff.email> | 2025-06-09 14:27:29 +0200 |
| commit | 652efae78c00b812033ea162d76cd13bd40dcab6 (patch) | |
| tree | 7c139f4d2a28061607cd7e2269693df993e5d60a /backend/hp5590_low.c | |
| parent | bfa2ae8e43fcbab696f272fffd164d0637e965c5 (diff) | |
New upstream version 1.4.0upstream/1.4.0upstream
Diffstat (limited to 'backend/hp5590_low.c')
| -rw-r--r-- | backend/hp5590_low.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/backend/hp5590_low.c b/backend/hp5590_low.c index 2d19dcf..7038f43 100644 --- a/backend/hp5590_low.c +++ b/backend/hp5590_low.c @@ -99,9 +99,15 @@ struct usb_in_usb_ctrl_setup { #define CORE_FLAG_NOT_READY 1 << 1 /* Bulk transfers are done in pages, below their respective sizes */ +/* + * Note that we limit the amount we can supply to sane_read() to avoid + * clashes with the size of the internal read buffer. + * + */ #define BULK_WRITE_PAGE_SIZE 0x0f000 #define BULK_READ_PAGE_SIZE 0x10000 -#define ALLOCATE_BULK_READ_PAGES 16 /* 16 * 65536 = 1Mb */ +#define ALLOCATE_BULK_READ_PAGES 17 /* 16 * 65536 = 1Mb */ +#define MAX_READ_PAGES 16 /* maximum that we will return to sane_read() */ /* Structure describing bulk read state, because bulk reads will be done in * pages, but function caller uses its own buffer, whose size is certainly |