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dcmi: Refactor to simplify read length calculation

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Multiple functions use a very complex equation employing
division, modulo, and ternary conditionals to perform a
very simple task of finding the minimum of two values.

Replace all those equations with a call to __min() macro.

Signed-off-by: Alexander Amelkin <alexander@amelkin.msk.ru>
This commit is contained in:
Alexander Amelkin 2019-03-07 14:10:28 +03:00
parent 8e4459f3dc
commit 97da8c83ae
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GPG Key ID: E893587B5B74178D
1 changed files with 10 additions and 20 deletions
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28
lib/ipmi_dcmi.c
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@ -780,9 +780,7 @@ ipmi_dcmi_prnt_getassettag(struct ipmi_intf * intf)
taglength = rsp->data[1];
printf("\n Asset tag: ");
while (taglength) {
/* TODO: Add parentheses for clarity */
getlength = taglength / DCMI_MAX_BYTE_SIZE ? DCMI_MAX_BYTE_SIZE
: taglength % DCMI_MAX_BYTE_SIZE;
getlength = __min(taglength, DCMI_MAX_BYTE_SIZE);
rsp = ipmi_dcmi_getassettag(intf, offset, getlength);
/* macro has no effect here where can generate sig segv
* if rsp occurs with null
@ -854,9 +852,7 @@ ipmi_dcmi_prnt_setassettag(struct ipmi_intf * intf, uint8_t * data)
}
printf("\n Set Asset Tag: ");
while (taglength) {
/* TODO: Use a macro or an inline for this repeating calculation */
getlength = taglength / DCMI_MAX_BYTE_SIZE ? DCMI_MAX_BYTE_SIZE
: taglength % DCMI_MAX_BYTE_SIZE;
getlength = __min(taglength, DCMI_MAX_BYTE_SIZE);
memcpy(tmpData, data + offset, getlength);
rsp = ipmi_dcmi_setassettag(intf, offset, getlength, tmpData);
if (chk_rsp(rsp)) {
@ -920,9 +916,7 @@ ipmi_dcmi_prnt_getmngctrlids(struct ipmi_intf * intf)
printf("\n Get Management Controller Identifier String: ");
while (taglength) {
/* TODO: Use a macro or an inline for this repeating calculation */
getlength = taglength / DCMI_MAX_BYTE_SIZE ? DCMI_MAX_BYTE_SIZE
: taglength % DCMI_MAX_BYTE_SIZE;
getlength = __min(taglength, DCMI_MAX_BYTE_SIZE);
rsp = ipmi_dcmi_getmngctrlids(intf, offset, getlength);
if (chk_rsp(rsp)) {
@ -998,9 +992,7 @@ ipmi_dcmi_prnt_setmngctrlids(struct ipmi_intf * intf, uint8_t * data)
printf("\n Set Management Controller Identifier String Command: ");
while (taglength) {
/* TODO: Use a macro or an inline for this repeating calculation */
getlength = taglength / DCMI_MAX_BYTE_SIZE ? DCMI_MAX_BYTE_SIZE
: taglength % DCMI_MAX_BYTE_SIZE;
getlength = __min(taglength, DCMI_MAX_BYTE_SIZE);
memcpy(tmpData, data + offset, getlength);
rsp = ipmi_dcmi_setmngctrlids(intf, offset, getlength, tmpData);
/* because after call "Set mc id string" RMCP+ will go down
@ -1294,7 +1286,7 @@ static int
ipmi_dcmi_prnt_get_temp_readings(struct ipmi_intf * intf)
{
struct ipmi_rs * rsp;
int i,j, tota_inst, get_inst, offset = 0;
int i,j, total_inst, get_inst, offset = 0;
/* Print sensor description */
printf("\n\tEntity ID\t\t\tEntity Instance\t Temp. Readings");
for (i = 0; dcmi_temp_read_vals[i].str; i++) {
@ -1307,11 +1299,9 @@ ipmi_dcmi_prnt_get_temp_readings(struct ipmi_intf * intf)
}
/* Total number of available instances for the Entity ID */
offset = 0;
tota_inst = rsp->data[1];
while (tota_inst > 0) {
get_inst = ((tota_inst / DCMI_MAX_BYTE_TEMP_READ_SIZE) ?
DCMI_MAX_BYTE_TEMP_READ_SIZE :
(tota_inst % DCMI_MAX_BYTE_TEMP_READ_SIZE));
total_inst = rsp->data[1];
while (total_inst > 0) {
get_inst = __min(total_inst, DCMI_MAX_BYTE_TEMP_READ_SIZE);
rsp = ipmi_dcmi_get_temp_readings(intf,
dcmi_temp_read_vals[i].val,
offset, 0);
@ -1330,7 +1320,7 @@ ipmi_dcmi_prnt_get_temp_readings(struct ipmi_intf * intf)
(rsp->data[j+3] & 127));
}
offset += get_inst;
tota_inst -= get_inst;
total_inst -= get_inst;
}
}
return 0;