[PATCH 16/18] pata_parport: remove scratch parameter from test_proto()

Ondrej Zary
2023-02-14T23:01:26Z

Don't pass around a pointer to scratch buffer. Use local buffers in
protocols that need it.

Signed-off-by: Ondrej Zary <linux@zary.sk>
---
drivers/ata/pata_parport/bpck.c | 2 +-
drivers/ata/pata_parport/epat.c | 3 ++-
drivers/ata/pata_parport/epia.c | 3 ++-
drivers/ata/pata_parport/friq.c | 3 ++-
drivers/ata/pata_parport/frpw.c | 3 ++-
drivers/ata/pata_parport/pata_parport.c | 23 +++++++++++------------
include/linux/pata_parport.h | 2 +-
7 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/drivers/ata/pata_parport/bpck.c b/drivers/ata/pata_parport/bpck.c
index 2072e291fd16..ecb98bf0e6de 100644
--- a/drivers/ata/pata_parport/bpck.c
+++ b/drivers/ata/pata_parport/bpck.c
@@ -274,7 +274,7 @@ static void bpck_force_spp(struct pi_adapter *pi)

#define TEST_LEN 16

-static int bpck_test_proto(struct pi_adapter *pi, char *scratch)
+static int bpck_test_proto(struct pi_adapter *pi)

{ int i, e, l, h, om;
char buf[TEST_LEN];
diff --git a/drivers/ata/pata_parport/epat.c b/drivers/ata/pata_parport/epat.c
index da3398941f81..26d1b6d438bc 100644
--- a/drivers/ata/pata_parport/epat.c
+++ b/drivers/ata/pata_parport/epat.c
@@ -246,10 +246,11 @@ static void epat_disconnect(struct pi_adapter *pi)
w2(pi->saved_r2);
}

-static int epat_test_proto(struct pi_adapter *pi, char *scratch)
+static int epat_test_proto(struct pi_adapter *pi)

{ int k, j, f, cc;
int e[2] = {0,0};
+ char scratch[512];

epat_connect(pi);
cc = RR(0xd);
diff --git a/drivers/ata/pata_parport/epia.c b/drivers/ata/pata_parport/epia.c
index a83685ed9dde..101a0d9f1aa6 100644
--- a/drivers/ata/pata_parport/epia.c
+++ b/drivers/ata/pata_parport/epia.c
@@ -232,10 +232,11 @@ static void epia_write_block(struct pi_adapter *pi, char *buf, int count)

}

-static int epia_test_proto(struct pi_adapter *pi, char *scratch)
+static int epia_test_proto(struct pi_adapter *pi)

{ int j, k, f;
int e[2] = {0,0};
+ char scratch[512];

epia_connect(pi);
for (j=0;j<2;j++) {
diff --git a/drivers/ata/pata_parport/friq.c b/drivers/ata/pata_parport/friq.c
index 7ace1f7eea34..9c4a6487b2a9 100644
--- a/drivers/ata/pata_parport/friq.c
+++ b/drivers/ata/pata_parport/friq.c
@@ -178,10 +178,11 @@ static void friq_disconnect(struct pi_adapter *pi)
w2(pi->saved_r2);
}

-static int friq_test_proto(struct pi_adapter *pi, char *scratch)
+static int friq_test_proto(struct pi_adapter *pi)

{ int j, k, r;
int e[2] = {0,0};
+ char scratch[512];

pi->saved_r0 = r0();
w0(0xff); udelay(20); CMD(0x3d); /* turn the power on */
diff --git a/drivers/ata/pata_parport/frpw.c b/drivers/ata/pata_parport/frpw.c
index d04a11889066..024b5c0737e0 100644
--- a/drivers/ata/pata_parport/frpw.c
+++ b/drivers/ata/pata_parport/frpw.c
@@ -219,10 +219,11 @@ static int frpw_test_pnp(struct pi_adapter *pi)
a hack :-(
*/

-static int frpw_test_proto(struct pi_adapter *pi, char *scratch)
+static int frpw_test_proto(struct pi_adapter *pi)

{ int j, k, r;
int e[2] = {0,0};
+ char scratch[512];

if ((pi->private>>1) != pi->port)
pi->private = frpw_test_pnp(pi) + 2*pi->port;
diff --git a/drivers/ata/pata_parport/pata_parport.c b/drivers/ata/pata_parport/pata_parport.c
index 27aa2419af02..77a3e5a3f062 100644
--- a/drivers/ata/pata_parport/pata_parport.c
+++ b/drivers/ata/pata_parport/pata_parport.c
@@ -276,7 +276,7 @@ static void pi_release(struct pi_adapter *pi)
module_put(pi->proto->owner);
}

-static int default_test_proto(struct pi_adapter *pi, char *scratch)
+static int default_test_proto(struct pi_adapter *pi)
{
int j, k;
int e[2] = { 0, 0 };
@@ -300,21 +300,21 @@ static int default_test_proto(struct pi_adapter *pi, char *scratch)
return e[0] && e[1]; /* not here if both > 0 */
}

-static int pi_test_proto(struct pi_adapter *pi, char *scratch)
+static int pi_test_proto(struct pi_adapter *pi)
{
int res;

parport_claim_or_block(pi->pardev);
if (pi->proto->test_proto)
- res = pi->proto->test_proto(pi, scratch);
+ res = pi->proto->test_proto(pi);
else
- res = default_test_proto(pi, scratch);
+ res = default_test_proto(pi);
parport_release(pi->pardev);

return res;
}

-static bool pi_probe_mode(struct pi_adapter *pi, int max, char *scratch)
+static bool pi_probe_mode(struct pi_adapter *pi, int max)
{
int best, range;

@@ -326,7 +326,7 @@ static bool pi_probe_mode(struct pi_adapter *pi, int max, char *scratch)
range = 8;
if (range == 8 && pi->port % 8)
return false;
- return !pi_test_proto(pi, scratch);
+ return !pi_test_proto(pi);
}
best = -1;
for (pi->mode = 0; pi->mode < max; pi->mode++) {
@@ -335,14 +335,14 @@ static bool pi_probe_mode(struct pi_adapter *pi, int max, char *scratch)
range = 8;
if (range == 8 && pi->port % 8)
break;
- if (!pi_test_proto(pi, scratch))
+ if (!pi_test_proto(pi))
best = pi->mode;
}
pi->mode = best;
return best > -1;
}

-static bool pi_probe_unit(struct pi_adapter *pi, int unit, char *scratch)
+static bool pi_probe_unit(struct pi_adapter *pi, int unit)
{
int max, s, e;

@@ -367,14 +367,14 @@ static bool pi_probe_unit(struct pi_adapter *pi, int unit, char *scratch)
for (pi->unit = s; pi->unit < e; pi->unit++) {
if (pi->proto->probe_unit(pi)) {
parport_release(pi->pardev);
- return pi_probe_mode(pi, max, scratch);
+ return pi_probe_mode(pi, max);
}
}
parport_release(pi->pardev);
return false;
}

- return pi_probe_mode(pi, max, scratch);
+ return pi_probe_mode(pi, max);
}

static void pata_parport_dev_release(struct device *dev)
@@ -419,7 +419,6 @@ static struct pi_adapter *pi_init_one(struct parport *parport,
struct pi_protocol *pr, int mode, int unit, int delay)
{
struct pardev_cb par_cb = { };
- char scratch[512];
const struct ata_port_info *ppi[] = { &pata_parport_port_info };
struct ata_host *host;
struct pi_adapter *pi;
@@ -469,7 +468,7 @@ static struct pi_adapter *pi_init_one(struct parport *parport,
if (!pi->pardev)
goto out_module_put;

- if (!pi_probe_unit(pi, unit, scratch)) {
+ if (!pi_probe_unit(pi, unit)) {
dev_info(&pi->dev, "Adapter not found\n");
goto out_unreg_parport;
}
diff --git a/include/linux/pata_parport.h b/include/linux/pata_parport.h
index e45bb1896003..bbfa4e63ee85 100644
--- a/include/linux/pata_parport.h
+++ b/include/linux/pata_parport.h
@@ -67,7 +67,7 @@ struct pi_protocol {

int (*test_port)(struct pi_adapter *pi);
int (*probe_unit)(struct pi_adapter *pi);
- int (*test_proto)(struct pi_adapter *pi, char *scratch);
+ int (*test_proto)(struct pi_adapter *pi);
void (*log_adapter)(struct pi_adapter *pi);

int (*init_proto)(struct pi_adapter *pi);
--
Ondrej Zary