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| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-11-11 10:55:15 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2018-12-07 12:38:25 +0300 |
| commit | ae2294b10b0f066ef500954b36c94ee11c4ef20f (patch) | |
| tree | ac6dc91792dc40771cdeea7ccb4213c4704fd1fc /drivers/mtd/nand/raw/internals.h | |
| parent | 1d0178593d148e88d2ac1e3f09c7f7eb1c20796b (diff) | |
| download | linux-ae2294b10b0f066ef500954b36c94ee11c4ef20f.tar.xz | |
mtd: rawnand: Pass the CS line to be selected in struct nand_operation
In order to deprecate the ->select_chip hook we need to pass the CS
line a NAND operations are targeting. This is done through the
addition of a cs field to the nand_operation struct.
We also need to keep track of the currently selected target to
properly initialize op->cs, hence the ->cur_cs field addition to the
nand_chip struct.
Note that op->cs is not assigned in nand_exec_op() because we might
rework the way we execute NAND operations in the future (adopt a
queuing mechanism instead of the serialization we have right now).
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Tested-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Diffstat (limited to 'drivers/mtd/nand/raw/internals.h')
| -rw-r--r-- | drivers/mtd/nand/raw/internals.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/internals.h b/drivers/mtd/nand/raw/internals.h index 6e2f61fbc5f0..b62728d5884b 100644 --- a/drivers/mtd/nand/raw/internals.h +++ b/drivers/mtd/nand/raw/internals.h @@ -101,6 +101,9 @@ static inline int nand_exec_op(struct nand_chip *chip, if (!chip->exec_op) return -ENOTSUPP; + if (WARN_ON(op->cs >= chip->numchips)) + return -EINVAL; + return chip->exec_op(chip, op, false); } |